23507780 has 12 divisors (see below), whose sum is σ = 49366380. Its totient is φ = 9403104.

The previous prime is 23507747. The next prime is 23507791. The reversal of 23507780 is 8770532.

It can be written as a sum of positive squares in 2 ways, for example, as 17909824 + 5597956 = 4232^2 + 2366^2 .

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, 587675 + ... + 587714.

It is an arithmetic number, because the mean of its divisors is an integer number (4113865).

Almost surely, 2^23507780 is an apocalyptic number.

23507780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23507780 is an abundant number, since it is smaller than the sum of its proper divisors (25858600).

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

23507780 is a wasteful number, since it uses less digits than its factorization.

23507780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175398 (or 1175396 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 23507780 is about 4848.4822367417. The cubic root of 23507780 is about 286.4643214822.

The spelling of 23507780 in words is "twenty-three million, five hundred seven thousand, seven hundred eighty".