23218880 has 28 divisors (see below), whose sum is σ = 55290720. Its totient is φ = 9287424.

The previous prime is 23218873. The next prime is 23218883. The reversal of 23218880 is 8881232.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (23218883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35960 + ... + 36599.

Almost surely, 2^23218880 is an apocalyptic number.

23218880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23218880 is an abundant number, since it is smaller than the sum of its proper divisors (32071840).

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

23218880 is an equidigital number, since it uses as much as digits as its factorization.

23218880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72576 (or 72566 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 23218880 is about 4818.5973062708. The cubic root of 23218880 is about 285.2859753896.

The spelling of 23218880 in words is "twenty-three million, two hundred eighteen thousand, eight hundred eighty".