23917992 has 32 divisors (see below), whose sum is σ = 68337600. Its totient is φ = 6833664.

The previous prime is 23917991. The next prime is 23918003. The reversal of 23917992 is 29971932.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (23917991) 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, 71017 + ... + 71352.

It is an arithmetic number, because the mean of its divisors is an integer number (2135550).

Almost surely, 2^23917992 is an apocalyptic number.

It is an amenable number.

23917992 is an abundant number, since it is smaller than the sum of its proper divisors (44419608).

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

23917992 is a wasteful number, since it uses less digits than its factorization.

23917992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142385 (or 142381 counting only the distinct ones).

The product of its digits is 61236, while the sum is 42.

The square root of 23917992 is about 4890.6024168808. The cubic root of 23917992 is about 288.1209946852.

The spelling of 23917992 in words is "twenty-three million, nine hundred seventeen thousand, nine hundred ninety-two".