22690836 has 72 divisors (see below), whose sum is σ = 66160640. Its totient is φ = 6422976.

The previous prime is 22690813. The next prime is 22690861. The reversal of 22690836 is 63809622.

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 22690836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31650 + ... + 32358.

Almost surely, 2^22690836 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 22690836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33080320).

22690836 is an abundant number, since it is smaller than the sum of its proper divisors (43469804).

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

22690836 is a wasteful number, since it uses less digits than its factorization.

22690836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 22690836 is about 4763.4898971237. The cubic root of 22690836 is about 283.1067118284.

The spelling of 22690836 in words is "twenty-two million, six hundred ninety thousand, eight hundred thirty-six".