23689988 has 24 divisors (see below), whose sum is σ = 47574912. Its totient is φ = 10111104.

The previous prime is 23689987. The next prime is 23689999. The reversal of 23689988 is 88998632.

It is a super-2 number, since 2×23689988² = 1122431062880288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23689987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5756 + ... + 8972.

It is an arithmetic number, because the mean of its divisors is an integer number (1982288).

Almost surely, 2^23689988 is an apocalyptic number.

23689988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23689988 is an abundant number, since it is smaller than the sum of its proper divisors (23884924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23689988 is a wasteful number, since it uses less digits than its factorization.

23689988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3489 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 23689988 is about 4867.2361767229. The cubic root of 23689988 is about 287.2025425038.

The spelling of 23689988 in words is "twenty-three million, six hundred eighty-nine thousand, nine hundred eighty-eight".