23943728 has 20 divisors (see below), whose sum is σ = 46522320. Its totient is φ = 11937984.

The previous prime is 23943697. The next prime is 23943761. The reversal of 23943728 is 82734932.

It is a happy number.

It is a super-2 number, since 2×23943728² = 1146604221075968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23943691 and 23943700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4301 + ... + 8147.

It is an arithmetic number, because the mean of its divisors is an integer number (2326116).

Almost surely, 2^23943728 is an apocalyptic number.

It is an amenable number.

23943728 is a deficient number, since it is larger than the sum of its proper divisors (22578592).

23943728 is a wasteful number, since it uses less digits than its factorization.

23943728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 4238 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 23943728 is about 4893.2328781696. The cubic root of 23943728 is about 288.2242980052.

The spelling of 23943728 in words is "twenty-three million, nine hundred forty-three thousand, seven hundred twenty-eight".