22730880 has 64 divisors (see below), whose sum is σ = 72460800. Its totient is φ = 6061056.

The previous prime is 22730861. The next prime is 22730881. The reversal of 22730880 is 8803722.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (22730881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4000 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (1132200).

Almost surely, 2^22730880 is an apocalyptic number.

22730880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22730880 is an abundant number, since it is smaller than the sum of its proper divisors (49729920).

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

22730880 is a wasteful number, since it uses less digits than its factorization.

22730880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861 (or 11849 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 22730880 is about 4767.6912651723. The cubic root of 22730880 is about 283.2731529240.

The spelling of 22730880 in words is "twenty-two million, seven hundred thirty thousand, eight hundred eighty".