22718572 has 12 divisors (see below), whose sum is σ = 41486256. Its totient is φ = 10865360.

The previous prime is 22718519. The next prime is 22718587. The reversal of 22718572 is 27581722.

It is a super-2 number, since 2×22718572² = 1032267027438368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123379 + ... + 123562.

It is an arithmetic number, because the mean of its divisors is an integer number (3457188).

Almost surely, 2^22718572 is an apocalyptic number.

It is an amenable number.

22718572 is a deficient number, since it is larger than the sum of its proper divisors (18767684).

22718572 is a wasteful number, since it uses less digits than its factorization.

22718572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246968 (or 246966 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 22718572 is about 4766.4003188989. The cubic root of 22718572 is about 283.2220160941. Note that the first 3 decimals are identical.

The spelling of 22718572 in words is "twenty-two million, seven hundred eighteen thousand, five hundred seventy-two".