23393987472 has 20 divisors (see below), whose sum is σ = 60434467760. Its totient is φ = 7797995808.

The previous prime is 23393987471. The next prime is 23393987497. The reversal of 23393987472 is 27478939332.

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

It is not an unprimeable number, because it can be changed into a prime (23393987471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243687322 + ... + 243687417.

It is an arithmetic number, because the mean of its divisors is an integer number (3021723388).

Almost surely, 2^23393987472 is an apocalyptic number.

It is an amenable number.

23393987472 is an abundant number, since it is smaller than the sum of its proper divisors (37040480288).

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

23393987472 is a wasteful number, since it uses less digits than its factorization.

23393987472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487374750 (or 487374744 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 57.

The spelling of 23393987472 in words is "twenty-three billion, three hundred ninety-three million, nine hundred eighty-seven thousand, four hundred seventy-two".