22840900 has 18 divisors (see below), whose sum is σ = 49564970. Its totient is φ = 9136320.

The previous prime is 22840891. The next prime is 22840921. The reversal of 22840900 is 904822.

It can be written as a sum of positive squares in 3 ways, for example, as 4981824 + 17859076 = 2232^2 + 4226^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114105 + ... + 114304.

Almost surely, 2^22840900 is an apocalyptic number.

22840900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22840900 is an abundant number, since it is smaller than the sum of its proper divisors (26724070).

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

22840900 is a wasteful number, since it uses less digits than its factorization.

22840900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228423 (or 228416 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 22840900 is about 4779.2154167813. The cubic root of 22840900 is about 283.7294421249.

The spelling of 22840900 in words is "twenty-two million, eight hundred forty thousand, nine hundred".