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23082155988 = 22310717976757
BaseRepresentation
bin10101011111110011…
…011011111111010100
32012120122011000102020
4111133303123333110
5334233012442423
614334230413140
71444666042263
oct253763337724
965518130366
1023082155988
119875303481
1245822011b0
13223b0c5988
14118d7965da
1590163c4e3
hex55fcdbfd4

23082155988 has 24 divisors (see below), whose sum is σ = 54361716192. Its totient is φ = 7622144544.

The previous prime is 23082155983. The next prime is 23082156017. The reversal of 23082155988 is 88955128032.

It is a super-2 number, since 2×230821559882 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23082155988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23082155983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8987095 + ... + 8989662.

It is an arithmetic number, because the mean of its divisors is an integer number (2265071508).

Almost surely, 223082155988 is an apocalyptic number.

It is an amenable number.

23082155988 is an abundant number, since it is smaller than the sum of its proper divisors (31279560204).

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

23082155988 is a wasteful number, since it uses less digits than its factorization.

23082155988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17976871 (or 17976869 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 23082155988 in words is "twenty-three billion, eighty-two million, one hundred fifty-five thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 107 214 321 428 642 1284 17976757 35953514 53930271 71907028 107860542 215721084 1923512999 3847025998 5770538997 7694051996 11541077994 23082155988