23507988 has 24 divisors (see below), whose sum is σ = 62688192. Its totient is φ = 6716544.

The previous prime is 23507969. The next prime is 23507989. The reversal of 23507988 is 88970532.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23507989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139845 + ... + 140012.

It is an arithmetic number, because the mean of its divisors is an integer number (2612008).

Almost surely, 2^23507988 is an apocalyptic number.

23507988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23507988 is an abundant number, since it is smaller than the sum of its proper divisors (39180204).

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

23507988 is a wasteful number, since it uses less digits than its factorization.

23507988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279871 (or 279869 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 23507988 is about 4848.5036867058. The cubic root of 23507988 is about 286.4651663713.

The spelling of 23507988 in words is "twenty-three million, five hundred seven thousand, nine hundred eighty-eight".