23791556 has 12 divisors (see below), whose sum is σ = 42603792. Its totient is φ = 11619048.

The previous prime is 23791543. The next prime is 23791567. The reversal of 23791556 is 65519732.

It is a happy number.

It is a super-2 number, since 2×23791556² = 1132076273802272, which contains 22 as substring.

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, 68990 + ... + 69333.

It is an arithmetic number, because the mean of its divisors is an integer number (3550316).

Almost surely, 2^23791556 is an apocalyptic number.

It is an amenable number.

23791556 is a deficient number, since it is larger than the sum of its proper divisors (18812236).

23791556 is a wasteful number, since it uses less digits than its factorization.

23791556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138370 (or 138368 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 23791556 is about 4877.6588646604. The cubic root of 23791556 is about 287.6124062034.

It can be divided in two parts, 23791 and 556, that multiplied together give a triangular number (13227796 = T₅₁₄₃).

The spelling of 23791556 in words is "twenty-three million, seven hundred ninety-one thousand, five hundred fifty-six".