22287700 has 18 divisors (see below), whose sum is σ = 48364526. Its totient is φ = 8915040.

The previous prime is 22287679. The next prime is 22287701. The reversal of 22287700 is 778222.

It can be written as a sum of positive squares in 3 ways, for example, as 5673924 + 16613776 = 2382^2 + 4076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22287701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111339 + ... + 111538.

Almost surely, 2^22287700 is an apocalyptic number.

22287700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22287700 is an abundant number, since it is smaller than the sum of its proper divisors (26076826).

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

22287700 is a wasteful number, since it uses less digits than its factorization.

22287700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222891 (or 222884 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 22287700 is about 4720.9850666995. The cubic root of 22287700 is about 281.4200814873.

The spelling of 22287700 in words is "twenty-two million, two hundred eighty-seven thousand, seven hundred".