22231680 has 64 divisors (see below), whose sum is σ = 70869600. Its totient is φ = 5927936.

The previous prime is 22231673. The next prime is 22231723. The reversal of 22231680 is 8613222.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22231680.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870 + ... + 7709.

Almost surely, 2^22231680 is an apocalyptic number.

22231680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22231680 is an abundant number, since it is smaller than the sum of its proper divisors (48637920).

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

22231680 is a wasteful number, since it uses less digits than its factorization.

22231680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11601 (or 11589 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 22231680 is about 4715.0482500182. The cubic root of 22231680 is about 281.1841011038.

The spelling of 22231680 in words is "twenty-two million, two hundred thirty-one thousand, six hundred eighty".