22756636 has 24 divisors (see below), whose sum is σ = 46158336. Its totient is φ = 9614640.

The previous prime is 22756633. The next prime is 22756639. The reversal of 22756636 is 63665722.

It is an interprime number because it is at equal distance from previous prime (22756633) and next prime (22756639).

It is a junction number, because it is equal to n+sod(n) for n = 22756595 and 22756604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22756631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3736 + ... + 7711.

It is an arithmetic number, because the mean of its divisors is an integer number (1923264).

Almost surely, 2^22756636 is an apocalyptic number.

It is an amenable number.

22756636 is an abundant number, since it is smaller than the sum of its proper divisors (23401700).

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

22756636 is a wasteful number, since it uses less digits than its factorization.

22756636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529 (or 11527 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 22756636 is about 4770.3915981814. The cubic root of 22756636 is about 283.3801033134.

It can be divided in two parts, 2275 and 6636, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 22756636 in words is "twenty-two million, seven hundred fifty-six thousand, six hundred thirty-six".