22815882 has 12 divisors (see below), whose sum is σ = 49434450. Its totient is φ = 7605288.

The previous prime is 22815869. The next prime is 22815883. The reversal of 22815882 is 28851822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16719921 + 6095961 = 4089^2 + 2469^2 .

It is not an unprimeable number, because it can be changed into a prime (22815883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 633757 + ... + 633792.

Almost surely, 2^22815882 is an apocalyptic number.

22815882 is an abundant number, since it is smaller than the sum of its proper divisors (26618568).

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

22815882 is a wasteful number, since it uses less digits than its factorization.

22815882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267557 (or 1267554 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 22815882 is about 4776.5973244560. The cubic root of 22815882 is about 283.6258131610.

It can be divided in two parts, 228 and 15882, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 22815882 in words is "twenty-two million, eight hundred fifteen thousand, eight hundred eighty-two".