22957236 has 48 divisors (see below), whose sum is σ = 61447680. Its totient is φ = 7404480.

The previous prime is 22957217. The next prime is 22957247. The reversal of 22957236 is 63275922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22957236.

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 15 ways as a sum of consecutive naturals, for example, 81 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (1280160).

Almost surely, 2^22957236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22957236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723840).

22957236 is an abundant number, since it is smaller than the sum of its proper divisors (38490444).

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

22957236 is a wasteful number, since it uses less digits than its factorization.

22957236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901 (or 6893 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 22957236 is about 4791.3709937762. The cubic root of 22957236 is about 284.2103348277.

The spelling of 22957236 in words is "twenty-two million, nine hundred fifty-seven thousand, two hundred thirty-six".