23933921 has 12 divisors (see below), whose sum is σ = 26455296. Its totient is φ = 21636120.

The previous prime is 23933879. The next prime is 23933933. The reversal of 23933921 is 12933932.

It is not a de Polignac number, because 23933921 - 2²² = 19739617 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23933971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26540 + ... + 27426.

It is an arithmetic number, because the mean of its divisors is an integer number (2204608).

Almost surely, 2^23933921 is an apocalyptic number.

It is an amenable number.

23933921 is a deficient number, since it is larger than the sum of its proper divisors (2521375).

23933921 is a wasteful number, since it uses less digits than its factorization.

23933921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1121 counting only the distinct ones).

The product of its digits is 8748, while the sum is 32.

The square root of 23933921 is about 4892.2306773087. The cubic root of 23933921 is about 288.1849418156.

The spelling of 23933921 in words is "twenty-three million, nine hundred thirty-three thousand, nine hundred twenty-one".