22564630 has 16 divisors (see below), whose sum is σ = 44308944. Its totient is φ = 8205280.

The previous prime is 22564613. The next prime is 22564651. The reversal of 22564630 is 3646522.

22564630 = T₂₀₂₀ + T₂₀₂₁ + ... + T₂₀₃₀.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102457 + ... + 102676.

It is an arithmetic number, because the mean of its divisors is an integer number (2769309).

Almost surely, 2^22564630 is an apocalyptic number.

22564630 is a deficient number, since it is larger than the sum of its proper divisors (21744314).

22564630 is a wasteful number, since it uses less digits than its factorization.

22564630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205151.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 22564630 is about 4750.2242052349. The cubic root of 22564630 is about 282.5808576336.

It can be divided in two parts, 2256 and 4630, that added together give a palindrome (6886).

The spelling of 22564630 in words is "twenty-two million, five hundred sixty-four thousand, six hundred thirty".