22285500 has 96 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 5838400.

The previous prime is 22285489. The next prime is 22285531. The reversal of 22285500 is 558222.

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 31 ways as a sum of consecutive naturals, for example, 124411 + ... + 124589.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^22285500 is an apocalyptic number.

22285500 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 22285500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

22285500 is an abundant number, since it is smaller than the sum of its proper divisors (43758660).

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

22285500 is a wasteful number, since it uses less digits than its factorization.

22285500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 22285500 is about 4720.7520587296. The cubic root of 22285500 is about 281.4108216033.

The spelling of 22285500 in words is "twenty-two million, two hundred eighty-five thousand, five hundred".