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8230900000 = 2555531553
BaseRepresentation
bin1111010101001100…
…11001000100100000
3210020121220001011011
413222212121010200
5113324102300000
63440424430304
7410653332001
oct75246310440
923217801134
108230900000
113544145aa4
121718618394
13a12328c3b
145812111a8
1533290a2ba
hex1ea999120

8230900000 has 144 divisors (see below), whose sum is σ = 20649881448. Its totient is φ = 3228160000.

The previous prime is 8230899977. The next prime is 8230900001. The reversal of 8230900000 is 90328.

It can be written as a sum of positive squares in 12 ways, for example, as 4756033296 + 3474866704 = 68964^2 + 58948^2 .

It is not an unprimeable number, because it can be changed into a prime (8230900001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5299224 + ... + 5300776.

Almost surely, 28230900000 is an apocalyptic number.

8230900000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8230900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10324940724).

8230900000 is an abundant number, since it is smaller than the sum of its proper divisors (12418981448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8230900000 is an equidigital number, since it uses as much as digits as its factorization.

8230900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1613 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 8230900000 is about 90724.3076578708. The cubic root of 8230900000 is about 2019.0594582265.

Adding to 8230900000 its reverse (90328), we get a palindrome (8230990328).

The spelling of 8230900000 in words is "eight billion, two hundred thirty million, nine hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 53 80 100 106 125 160 200 212 250 265 400 424 500 530 625 800 848 1000 1060 1250 1325 1553 1696 2000 2120 2500 2650 3106 3125 4000 4240 5000 5300 6212 6250 6625 7765 8480 10000 10600 12424 12500 13250 15530 20000 21200 24848 25000 26500 31060 33125 38825 42400 49696 50000 53000 62120 66250 77650 82309 100000 106000 124240 132500 155300 164618 165625 194125 212000 248480 265000 310600 329236 331250 388250 411545 530000 621200 658472 662500 776500 823090 970625 1060000 1242400 1316944 1325000 1553000 1646180 1941250 2057725 2633888 2650000 3106000 3292360 3882500 4115450 4853125 5300000 6212000 6584720 7765000 8230900 9706250 10288625 13169440 15530000 16461800 19412500 20577250 31060000 32923600 38825000 41154500 51443125 65847200 77650000 82309000 102886250 155300000 164618000 205772500 257215625 329236000 411545000 514431250 823090000 1028862500 1646180000 2057725000 4115450000 8230900000