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9120250000 = 24561912
BaseRepresentation
bin10000111111001101…
…11111100010010000
3212112121100201000001
420133212333202100
5122134241000000
64104554335344
7442002563101
oct103746774220
925477321001
109120250000
1139601638a4
12192642a554
13b24663c44
146273983a8
15385a3146a
hex21f9bf890

9120250000 has 105 divisors (see below), whose sum is σ = 22204071253. Its totient is φ = 3629000000.

The previous prime is 9120249997. The next prime is 9120250067. The reversal of 9120250000 is 520219.

The square root of 9120250000 is 95500.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 7990214544 + 1130035456 = 89388^2 + 33616^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9120250000.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 47749905 + ... + 47750095.

Almost surely, 29120250000 is an apocalyptic number.

9120250000 is the 95500-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9120250000

9120250000 is an abundant number, since it is smaller than the sum of its proper divisors (13083821253).

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

9120250000 is an frugal number, since it uses more digits than its factorization.

9120250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The cubic root of 9120250000 is about 2089.3069441852.

Adding to 9120250000 its reverse (520219), we get a palindrome (9120770219).

The spelling of 9120250000 in words is "nine billion, one hundred twenty million, two hundred fifty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 191 200 250 382 400 500 625 764 955 1000 1250 1528 1910 2000 2500 3056 3125 3820 4775 5000 6250 7640 9550 10000 12500 15280 15625 19100 23875 25000 31250 36481 38200 47750 50000 62500 72962 76400 95500 119375 125000 145924 182405 191000 238750 250000 291848 364810 382000 477500 583696 596875 729620 912025 955000 1193750 1459240 1824050 1910000 2387500 2918480 2984375 3648100 4560125 4775000 5968750 7296200 9120250 9550000 11937500 14592400 18240500 22800625 23875000 36481000 45601250 47750000 72962000 91202500 114003125 182405000 228006250 364810000 456012500 570015625 912025000 1140031250 1824050000 2280062500 4560125000 9120250000