23139976 has 16 divisors (see below), whose sum is σ = 43456140. Its totient is φ = 11551680.

The previous prime is 23139973. The next prime is 23139983. The reversal of 23139976 is 67993132.

It can be written as a sum of positive squares in 2 ways, for example, as 21252100 + 1887876 = 4610^2 + 1374^2 .

It is not an unprimeable number, because it can be changed into a prime (23139973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4146 + ... + 7966.

Almost surely, 2^23139976 is an apocalyptic number.

It is an amenable number.

23139976 is a deficient number, since it is larger than the sum of its proper divisors (20316164).

23139976 is a wasteful number, since it uses less digits than its factorization.

23139976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584 (or 4580 counting only the distinct ones).

The product of its digits is 61236, while the sum is 40.

The square root of 23139976 is about 4810.4028937294. The cubic root of 23139976 is about 284.9624491411.

The spelling of 23139976 in words is "twenty-three million, one hundred thirty-nine thousand, nine hundred seventy-six".