23921394760 has 32 divisors (see below), whose sum is σ = 53836990200. Its totient is φ = 9566095360.

The previous prime is 23921394737. The next prime is 23921394769. The reversal of 23921394760 is 6749312932.

It can be written as a sum of positive squares in 4 ways, for example, as 19298210724 + 4623184036 = 138918^2 + 67994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23921394760.

It is not an unprimeable number, because it can be changed into a prime (23921394769) 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, 84600 + ... + 234520.

Almost surely, 2^23921394760 is an apocalyptic number.

23921394760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23921394760 is an abundant number, since it is smaller than the sum of its proper divisors (29915595440).

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

23921394760 is a wasteful number, since it uses less digits than its factorization.

23921394760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153921 (or 153917 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 23921394760 in words is "twenty-three billion, nine hundred twenty-one million, three hundred ninety-four thousand, seven hundred sixty".