23397988 has 6 divisors (see below), whose sum is σ = 40946486. Its totient is φ = 11698992.

The previous prime is 23397973. The next prime is 23397991. The reversal of 23397988 is 88979332.

It can be written as a sum of positive squares in only one way, i.e., 15824484 + 7573504 = 3978^2 + 2752^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2924745 + ... + 2924752.

Almost surely, 2^23397988 is an apocalyptic number.

It is an amenable number.

23397988 is a deficient number, since it is larger than the sum of its proper divisors (17548498).

23397988 is a wasteful number, since it uses less digits than its factorization.

23397988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5849501 (or 5849499 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 23397988 is about 4837.1466796036. The cubic root of 23397988 is about 286.0176525854.

It can be divided in two parts, 2 and 3397988, that multiplied together give a palindrome (6795976).

The spelling of 23397988 in words is "twenty-three million, three hundred ninety-seven thousand, nine hundred eighty-eight".