22636252 has 6 divisors (see below), whose sum is σ = 39613448. Its totient is φ = 11318124.

The previous prime is 22636249. The next prime is 22636261. The reversal of 22636252 is 25263622.

It is a self number, because there is not a number n which added to its sum of digits gives 22636252.

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, 2829528 + ... + 2829535.

Almost surely, 2^22636252 is an apocalyptic number.

It is an amenable number.

22636252 is a deficient number, since it is larger than the sum of its proper divisors (16977196).

22636252 is a wasteful number, since it uses less digits than its factorization.

22636252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5659067 (or 5659065 counting only the distinct ones).

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

The square root of 22636252 is about 4757.7570345700. The cubic root of 22636252 is about 282.8795201929.

Adding to 22636252 its reverse (25263622), we get a palindrome (47899874).

It can be divided in two parts, 2263 and 6252, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 22636252 in words is "twenty-two million, six hundred thirty-six thousand, two hundred fifty-two".