22987656 has 48 divisors (see below), whose sum is σ = 63948300. Its totient is φ = 7454592.

The previous prime is 22987607. The next prime is 22987673. The reversal of 22987656 is 65678922.

It can be written as a sum of positive squares in 2 ways, for example, as 19980900 + 3006756 = 4470^2 + 1734^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1651 + ... + 6978.

Almost surely, 2^22987656 is an apocalyptic number.

It is an amenable number.

22987656 is an abundant number, since it is smaller than the sum of its proper divisors (40960644).

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

22987656 is a wasteful number, since it uses less digits than its factorization.

22987656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8678 (or 8671 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 22987656 is about 4794.5443996276. The cubic root of 22987656 is about 284.3358125126.

The spelling of 22987656 in words is "twenty-two million, nine hundred eighty-seven thousand, six hundred fifty-six".