23312880 has 160 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 6048000.

The previous prime is 23312857. The next prime is 23312881. The reversal of 23312880 is 8821332.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92755 + ... + 93005.

It is an arithmetic number, because the mean of its divisors is an integer number (515592).

Almost surely, 2^23312880 is an apocalyptic number.

23312880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23312880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41247360).

23312880 is an abundant number, since it is smaller than the sum of its proper divisors (59181840).

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

23312880 is a wasteful number, since it uses less digits than its factorization.

23312880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 23312880 is about 4828.3413301050. The cubic root of 23312880 is about 285.6704437491.

The spelling of 23312880 in words is "twenty-three million, three hundred twelve thousand, eight hundred eighty".