23978502 has 24 divisors (see below), whose sum is σ = 52355160. Its totient is φ = 7931040.

The previous prime is 23978501. The next prime is 23978509. The reversal of 23978502 is 20587932.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2727 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (2181465).

Almost surely, 2^23978502 is an apocalyptic number.

23978502 is an abundant number, since it is smaller than the sum of its proper divisors (28376658).

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

23978502 is a wasteful number, since it uses less digits than its factorization.

23978502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10308 (or 10305 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 23978502 is about 4896.7848635610. The cubic root of 23978502 is about 288.3637619959.

The spelling of 23978502 in words is "twenty-three million, nine hundred seventy-eight thousand, five hundred two".