22550836 has 48 divisors (see below), whose sum is σ = 49577472. Its totient is φ = 8719200.

The previous prime is 22550831. The next prime is 22550837. The reversal of 22550836 is 63805522.

It is a happy number.

22550836 is nontrivially palindromic in base 15.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22550798 and 22550807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64815 + ... + 65161.

It is an arithmetic number, because the mean of its divisors is an integer number (1032864).

Almost surely, 2^22550836 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 22550836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24788736).

22550836 is an abundant number, since it is smaller than the sum of its proper divisors (27026636).

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

22550836 is a wasteful number, since it uses less digits than its factorization.

22550836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 22550836 is about 4748.7720518046. The cubic root of 22550836 is about 282.5232643279.

The spelling of 22550836 in words is "twenty-two million, five hundred fifty thousand, eight hundred thirty-six".