22286736 has 30 divisors (see below), whose sum is σ = 62372310. Its totient is φ = 7428864.

The previous prime is 22286723. The next prime is 22286741. The reversal of 22286736 is 63768222.

It can be written as a sum of positive squares in only one way, i.e., 21678336 + 608400 = 4656^2 + 780^2 .

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 22286736.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77241 + ... + 77528.

It is an arithmetic number, because the mean of its divisors is an integer number (2079077).

Almost surely, 2^22286736 is an apocalyptic number.

It is an amenable number.

22286736 is an abundant number, since it is smaller than the sum of its proper divisors (40085574).

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

22286736 is a wasteful number, since it uses less digits than its factorization.

22286736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154783 (or 154774 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 22286736 is about 4720.8829682592. The cubic root of 22286736 is about 281.4160240495.

The spelling of 22286736 in words is "twenty-two million, two hundred eighty-six thousand, seven hundred thirty-six".