22792788 has 18 divisors (see below), whose sum is σ = 57615194. Its totient is φ = 7597584.

The previous prime is 22792751. The next prime is 22792807. The reversal of 22792788 is 88729722.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 777924 = 4692^2 + 882^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×22792788² = 1039022369625888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316531 + ... + 316602.

Almost surely, 2^22792788 is an apocalyptic number.

It is an amenable number.

22792788 is an abundant number, since it is smaller than the sum of its proper divisors (34822406).

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

22792788 is a wasteful number, since it uses less digits than its factorization.

22792788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633143 (or 633138 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 22792788 is about 4774.1793011993. The cubic root of 22792788 is about 283.5300864834.

The spelling of 22792788 in words is "twenty-two million, seven hundred ninety-two thousand, seven hundred eighty-eight".