23492720538 has 48 divisors (see below), whose sum is σ = 58317644736. Its totient is φ = 6695452800.

The previous prime is 23492720533. The next prime is 23492720539. The reversal of 23492720538 is 83502729432.

23492720538 is a `hidden beast` number, since 2 + 3 + 4 + 92 + 7 + 20 + 538 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 23492720493 and 23492720502.

It is not an unprimeable number, because it can be changed into a prime (23492720533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181956 + ... + 283007.

It is an arithmetic number, because the mean of its divisors is an integer number (1214950932).

Almost surely, 2^23492720538 is an apocalyptic number.

23492720538 is an abundant number, since it is smaller than the sum of its proper divisors (34824924198).

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

23492720538 is a wasteful number, since it uses less digits than its factorization.

23492720538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465379 (or 465376 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 23492720538 in words is "twenty-three billion, four hundred ninety-two million, seven hundred twenty thousand, five hundred thirty-eight".