22646872 has 8 divisors (see below), whose sum is σ = 42462900. Its totient is φ = 11323432.

The previous prime is 22646843. The next prime is 22646891. The reversal of 22646872 is 27864622.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22646872² = 1025761622768768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415422 + ... + 1415437.

Almost surely, 2^22646872 is an apocalyptic number.

It is an amenable number.

22646872 is a deficient number, since it is larger than the sum of its proper divisors (19816028).

22646872 is a wasteful number, since it uses less digits than its factorization.

22646872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830865 (or 2830861 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 22646872 is about 4758.8729758211. The cubic root of 22646872 is about 282.9237517617.

The spelling of 22646872 in words is "twenty-two million, six hundred forty-six thousand, eight hundred seventy-two".