23139748 has 12 divisors (see below), whose sum is σ = 42255360. Its totient is φ = 11066792.

The previous prime is 23139731. The next prime is 23139751. The reversal of 23139748 is 84793132.

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, 125668 + ... + 125851.

It is an arithmetic number, because the mean of its divisors is an integer number (3521280).

Almost surely, 2^23139748 is an apocalyptic number.

It is an amenable number.

23139748 is a deficient number, since it is larger than the sum of its proper divisors (19115612).

23139748 is a wasteful number, since it uses less digits than its factorization.

23139748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251546 (or 251544 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 23139748 is about 4810.3791950323. The cubic root of 23139748 is about 284.9615132189.

The spelling of 23139748 in words is "twenty-three million, one hundred thirty-nine thousand, seven hundred forty-eight".