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202130233220 = 225471791816637
BaseRepresentation
bin1011110000111111100…
…1101001011110000100
3201022201210200202010002
42330033321221132010
511302430314430340
6232505104220432
720413655430326
oct2741771513604
9638653622102
10202130233220
11787a5279a23
123321100a718
13160a37641c6
149ad6d9b616
1553d04ae715
hex2f0fe69784

202130233220 has 96 divisors (see below), whose sum is σ = 438401134080. Its totient is φ = 78243217920.

The previous prime is 202130233199. The next prime is 202130233243. The reversal of 202130233220 is 22332031202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 202130233192 and 202130233201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30451742 + ... + 30458378.

It is an arithmetic number, because the mean of its divisors is an integer number (4566678480).

Almost surely, 2202130233220 is an apocalyptic number.

202130233220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202130233220 is an abundant number, since it is smaller than the sum of its proper divisors (236270900860).

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

202130233220 is a wasteful number, since it uses less digits than its factorization.

202130233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053 (or 7051 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 202130233220 its reverse (22332031202), we get a palindrome (224462264422).

The spelling of 202130233220 in words is "two hundred two billion, one hundred thirty million, two hundred thirty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 47 94 179 181 188 235 358 362 470 716 724 895 905 940 1790 1810 3580 3620 6637 8413 8507 13274 16826 17014 26548 32399 33185 33652 34028 42065 42535 64798 66370 84130 85070 129596 132740 161995 168260 170140 311939 323990 623878 647980 1188023 1201297 1247756 1522753 1559695 2376046 2402594 3045506 3119390 4752092 4805188 5940115 6006485 6091012 6238780 7613765 11880230 12012970 15227530 23760460 24025940 30455060 55837081 56460959 111674162 112921918 215032163 223348324 225843836 279185405 282304795 430064326 558370810 564609590 860128652 1075160815 1116741620 1129219180 2150321630 4300643260 10106511661 20213023322 40426046644 50532558305 101065116610 202130233220