22801564 has 6 divisors (see below), whose sum is σ = 39902744. Its totient is φ = 11400780.

The previous prime is 22801547. The next prime is 22801589. The reversal of 22801564 is 46510822.

It is a super-2 number, since 2×22801564² = 1039822641692192, which contains 22 as substring.

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, 2850192 + ... + 2850199.

Almost surely, 2^22801564 is an apocalyptic number.

It is an amenable number.

22801564 is a deficient number, since it is larger than the sum of its proper divisors (17101180).

22801564 is a wasteful number, since it uses less digits than its factorization.

22801564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700395 (or 5700393 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22801564 is about 4775.0983235950. The cubic root of 22801564 is about 283.5664713954.

It can be divided in two parts, 2280 and 1564, that added together give a square (3844 = 62²).

The spelling of 22801564 in words is "twenty-two million, eight hundred one thousand, five hundred sixty-four".