22656916 has 12 divisors (see below), whose sum is σ = 39754260. Its totient is φ = 11298560.

The previous prime is 22656899. The next prime is 22656973. The reversal of 22656916 is 61965622.

It can be written as a sum of positive squares in 2 ways, for example, as 13293316 + 9363600 = 3646^2 + 3060^2 .

It is a congruent number.

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, 5725 + ... + 8836.

It is an arithmetic number, because the mean of its divisors is an integer number (3312855).

Almost surely, 2^22656916 is an apocalyptic number.

It is an amenable number.

22656916 is a deficient number, since it is larger than the sum of its proper divisors (17097344).

22656916 is a wasteful number, since it uses less digits than its factorization.

22656916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14954 (or 14952 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 22656916 is about 4759.9281507182. The cubic root of 22656916 is about 282.9655716087.

The spelling of 22656916 in words is "twenty-two million, six hundred fifty-six thousand, nine hundred sixteen".