22678236 has 72 divisors (see below), whose sum is σ = 67651584. Its totient is φ = 6268320.

The previous prime is 22678219. The next prime is 22678241. The reversal of 22678236 is 63287622.

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 22678236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6361 + ... + 9263.

Almost surely, 2^22678236 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 22678236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33825792).

22678236 is an abundant number, since it is smaller than the sum of its proper divisors (44973348).

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

22678236 is a wasteful number, since it uses less digits than its factorization.

22678236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951 (or 2946 counting only the distinct ones).

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

The square root of 22678236 is about 4762.1671537232. The cubic root of 22678236 is about 283.0542999936.

The spelling of 22678236 in words is "twenty-two million, six hundred seventy-eight thousand, two hundred thirty-six".