22770756 has 18 divisors (see below), whose sum is σ = 57559502. Its totient is φ = 7590240.

The previous prime is 22770749. The next prime is 22770757. The reversal of 22770756 is 65707722.

It can be written as a sum of positive squares in only one way, i.e., 22410756 + 360000 = 4734^2 + 600^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 632521 = 22770756 / (2 + 2 + 7 + 7 + 0 + 7 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 22770756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770757) 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, 316225 + ... + 316296.

Almost surely, 2^22770756 is an apocalyptic number.

It is an amenable number.

22770756 is an abundant number, since it is smaller than the sum of its proper divisors (34788746).

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

22770756 is a wasteful number, since it uses less digits than its factorization.

22770756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632531 (or 632526 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 22770756 is about 4771.8713310398. The cubic root of 22770756 is about 283.4387016020.

It can be divided in two parts, 2277075 and 6, that added together give a square (2277081 = 1509²).

The spelling of 22770756 in words is "twenty-two million, seven hundred seventy thousand, seven hundred fifty-six".