22465220 has 24 divisors (see below), whose sum is σ = 49660800. Its totient is φ = 8512992.

The previous prime is 22465217. The next prime is 22465237. The reversal of 22465220 is 2256422.

It is a super-2 number, since 2×22465220² = 1009372219296800, which contains 22 as substring.

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, 29180 + ... + 29939.

It is an arithmetic number, because the mean of its divisors is an integer number (2069200).

Almost surely, 2^22465220 is an apocalyptic number.

22465220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22465220 is an abundant number, since it is smaller than the sum of its proper divisors (27195580).

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

22465220 is a wasteful number, since it uses less digits than its factorization.

22465220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59147 (or 59145 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22465220 is about 4739.7489384987. The cubic root of 22465220 is about 282.1652703904.

The spelling of 22465220 in words is "twenty-two million, four hundred sixty-five thousand, two hundred twenty".