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23990568672 = 25373159131149
BaseRepresentation
bin10110010101111100…
…110000011011100000
32021220221111011100110
4112111330300123200
5343113041144142
615004321051320
71506336316620
oct262574603340
967827434313
1023990568672
11a1a1061364
124796486b40
132354376585
1412382a2880
1595627b99c
hex595f306e0

23990568672 has 384 divisors, whose sum is σ = 76640256000. Its totient is φ = 6427699200.

The previous prime is 23990568631. The next prime is 23990568677. The reversal of 23990568672 is 27686509932.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23990568677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 161010454 + ... + 161010602.

It is an arithmetic number, because the mean of its divisors is an integer number (199584000).

Almost surely, 223990568672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23990568672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38320128000).

23990568672 is an abundant number, since it is smaller than the sum of its proper divisors (52649687328).

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

23990568672 is a wasteful number, since it uses less digits than its factorization.

23990568672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 23990568672 in words is "twenty-three billion, nine hundred ninety million, five hundred sixty-eight thousand, six hundred seventy-two".