23990480 has 20 divisors (see below), whose sum is σ = 55778052. Its totient is φ = 9596160.

The previous prime is 23990459. The next prime is 23990509. The reversal of 23990480 is 8409932.

It can be written as a sum of positive squares in 2 ways, for example, as 15649936 + 8340544 = 3956^2 + 2888^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 23990480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149861 + ... + 150020.

Almost surely, 2^23990480 is an apocalyptic number.

23990480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23990480 is an abundant number, since it is smaller than the sum of its proper divisors (31787572).

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

23990480 is a wasteful number, since it uses less digits than its factorization.

23990480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299894 (or 299888 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 23990480 is about 4898.0077582625. The cubic root of 23990480 is about 288.4117695288.

The spelling of 23990480 in words is "twenty-three million, nine hundred ninety thousand, four hundred eighty".