23821988 has 6 divisors (see below), whose sum is σ = 41688486. Its totient is φ = 11910992.

The previous prime is 23821979. The next prime is 23822003. The reversal of 23821988 is 88912832.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 8076964 = 3968^2 + 2842^2 .

It is a super-2 number, since 2×23821988² = 1134974224544288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2977745 + ... + 2977752.

It is an arithmetic number, because the mean of its divisors is an integer number (6948081).

Almost surely, 2^23821988 is an apocalyptic number.

It is an amenable number.

23821988 is a deficient number, since it is larger than the sum of its proper divisors (17866498).

23821988 is a wasteful number, since it uses less digits than its factorization.

23821988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955501 (or 5955499 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 23821988 is about 4880.7773970957. Note that the first 3 decimals coincide. The cubic root of 23821988 is about 287.7349831875.

The spelling of 23821988 in words is "twenty-three million, eight hundred twenty-one thousand, nine hundred eighty-eight".