23688780 has 24 divisors (see below), whose sum is σ = 66328752. Its totient is φ = 6316992.

The previous prime is 23688751. The next prime is 23688809. The reversal of 23688780 is 8788632.

It is an interprime number because it is at equal distance from previous prime (23688751) and next prime (23688809).

It is a super-2 number, since 2×23688780² = 1122316595776800, which contains 22 as substring.

It is an unprimeable number.

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, 197347 + ... + 197466.

It is an arithmetic number, because the mean of its divisors is an integer number (2763698).

Almost surely, 2^23688780 is an apocalyptic number.

23688780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23688780 is an abundant number, since it is smaller than the sum of its proper divisors (42639972).

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

23688780 is a wasteful number, since it uses less digits than its factorization.

23688780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394825 (or 394823 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 23688780 is about 4867.1120800738. The cubic root of 23688780 is about 287.1976607429.

The spelling of 23688780 in words is "twenty-three million, six hundred eighty-eight thousand, seven hundred eighty".