23922987 has 8 divisors (see below), whose sum is σ = 34797120. Its totient is φ = 14498760.

The previous prime is 23922973. The next prime is 23922989. The reversal of 23922987 is 78922932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23922987 - 2⁶ = 23922923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23922989) 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, 362437 + ... + 362502.

It is an arithmetic number, because the mean of its divisors is an integer number (4349640).

Almost surely, 2^23922987 is an apocalyptic number.

23922987 is a deficient number, since it is larger than the sum of its proper divisors (10874133).

23922987 is a wasteful number, since it uses less digits than its factorization.

23922987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724953.

The product of its digits is 108864, while the sum is 42.

The square root of 23922987 is about 4891.1130635061. The cubic root of 23922987 is about 288.1410502177.

Subtracting 23922987 from its reverse (78922932), we obtain a palindrome (54999945).

The spelling of 23922987 in words is "twenty-three million, nine hundred twenty-two thousand, nine hundred eighty-seven".