22155664 has 20 divisors (see below), whose sum is σ = 43926256. Its totient is φ = 10819872.

The previous prime is 22155649. The next prime is 22155671. The reversal of 22155664 is 46655122.

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, 15414 + ... + 16789.

Almost surely, 2^22155664 is an apocalyptic number.

It is an amenable number.

22155664 is a deficient number, since it is larger than the sum of its proper divisors (21770592).

22155664 is a wasteful number, since it uses less digits than its factorization.

22155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32254 (or 32248 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 22155664 is about 4706.9803483762. The cubic root of 22155664 is about 280.8632541759.

The spelling of 22155664 in words is "twenty-two million, one hundred fifty-five thousand, six hundred sixty-four".