22101680 has 40 divisors (see below), whose sum is σ = 51585984. Its totient is φ = 8806400.

The previous prime is 22101679. The next prime is 22101701. The reversal of 22101680 is 8610122.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 34160 + ... + 34800.

Almost surely, 2^22101680 is an apocalyptic number.

22101680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101680 is an abundant number, since it is smaller than the sum of its proper divisors (29484304).

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

22101680 is a wasteful number, since it uses less digits than its factorization.

22101680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 22101680 is about 4701.2423889861. The cubic root of 22101680 is about 280.6349535906.

The spelling of 22101680 in words is "twenty-two million, one hundred one thousand, six hundred eighty".