22536380 has 48 divisors (see below), whose sum is σ = 49373184. Its totient is φ = 8631360.

The previous prime is 22536361. The next prime is 22536391. The reversal of 22536380 is 8363522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100949 + ... + 101171.

It is an arithmetic number, because the mean of its divisors is an integer number (1028608).

Almost surely, 2^22536380 is an apocalyptic number.

22536380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22536380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24686592).

22536380 is an abundant number, since it is smaller than the sum of its proper divisors (26836804).

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

22536380 is a wasteful number, since it uses less digits than its factorization.

22536380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22536380 is about 4747.2497301069. The cubic root of 22536380 is about 282.4628818019.

The spelling of 22536380 in words is "twenty-two million, five hundred thirty-six thousand, three hundred eighty".