22536774 has 96 divisors (see below), whose sum is σ = 57264480. Its totient is φ = 6345216.

The previous prime is 22536743. The next prime is 22536821. The reversal of 22536774 is 47763522.

It is a happy number.

22536774 is a `hidden beast` number, since 225 + 367 + 74 = 666.

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 47 ways as a sum of consecutive naturals, for example, 164434 + ... + 164570.

It is an arithmetic number, because the mean of its divisors is an integer number (596505).

Almost surely, 2^22536774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22536774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28632240).

22536774 is an abundant number, since it is smaller than the sum of its proper divisors (34727706).

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

22536774 is a wasteful number, since it uses less digits than its factorization.

22536774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 211 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 22536774 is about 4747.2912276371. The cubic root of 22536774 is about 282.4645278770.

The spelling of 22536774 in words is "twenty-two million, five hundred thirty-six thousand, seven hundred seventy-four".