23981502 has 16 divisors (see below), whose sum is σ = 50048640. Its totient is φ = 7646232.

The previous prime is 23981501. The next prime is 23981519. The reversal of 23981502 is 20518932.

It is a happy number.

It is a super-2 number, since 2×23981502² = 1150224876352008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23981502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23981501) 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, 86752 + ... + 87027.

It is an arithmetic number, because the mean of its divisors is an integer number (3128040).

Almost surely, 2^23981502 is an apocalyptic number.

23981502 is an abundant number, since it is smaller than the sum of its proper divisors (26067138).

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

23981502 is a wasteful number, since it uses less digits than its factorization.

23981502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173807.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 23981502 is about 4897.0911774236. The cubic root of 23981502 is about 288.3757874234.

The spelling of 23981502 in words is "twenty-three million, nine hundred eighty-one thousand, five hundred two".