23252491920 has 80 divisors (see below), whose sum is σ = 82380263040. Its totient is φ = 5314854912.

The previous prime is 23252491919. The next prime is 23252491949. The reversal of 23252491920 is 2919425232.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6918705 + ... + 6922064.

It is an arithmetic number, because the mean of its divisors is an integer number (1029753288).

Almost surely, 2^23252491920 is an apocalyptic number.

23252491920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23252491920 is an abundant number, since it is smaller than the sum of its proper divisors (59127771120).

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

23252491920 is a wasteful number, since it uses less digits than its factorization.

23252491920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13840792 (or 13840786 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 23252491920 in words is "twenty-three billion, two hundred fifty-two million, four hundred ninety-one thousand, nine hundred twenty".