22085500 has 24 divisors (see below), whose sum is σ = 48235824. Its totient is φ = 8834000.

The previous prime is 22085489. The next prime is 22085513. The reversal of 22085500 is 558022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21586 + ... + 22585.

It is an arithmetic number, because the mean of its divisors is an integer number (2009826).

Almost surely, 2^22085500 is an apocalyptic number.

22085500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22085500 is an abundant number, since it is smaller than the sum of its proper divisors (26150324).

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

22085500 is a wasteful number, since it uses less digits than its factorization.

22085500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44190 (or 44178 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 22085500 is about 4699.5212522128. The cubic root of 22085500 is about 280.5664552980.

The spelling of 22085500 in words is "twenty-two million, eighty-five thousand, five hundred".