23504780 has 24 divisors (see below), whose sum is σ = 53157552. Its totient is φ = 8678592.

The previous prime is 23504777. The next prime is 23504783. The reversal of 23504780 is 8740532.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23504777) and next prime (23504783).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23504783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44942 + ... + 45461.

It is an arithmetic number, because the mean of its divisors is an integer number (2214898).

Almost surely, 2^23504780 is an apocalyptic number.

23504780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23504780 is an abundant number, since it is smaller than the sum of its proper divisors (29652772).

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

23504780 is a wasteful number, since it uses less digits than its factorization.

23504780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90425 (or 90423 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 23504780 is about 4848.1728517040. The cubic root of 23504780 is about 286.4521350269.

The spelling of 23504780 in words is "twenty-three million, five hundred four thousand, seven hundred eighty".