22513300 has 18 divisors (see below), whose sum is σ = 48854078. Its totient is φ = 9005280.

The previous prime is 22513291. The next prime is 22513301. The reversal of 22513300 is 331522.

It can be written as a sum of positive squares in 3 ways, for example, as 404496 + 22108804 = 636^2 + 4702^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22513301) 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, 112467 + ... + 112666.

Almost surely, 2^22513300 is an apocalyptic number.

22513300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22513300 is an abundant number, since it is smaller than the sum of its proper divisors (26340778).

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

22513300 is a wasteful number, since it uses less digits than its factorization.

22513300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225147 (or 225140 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 22513300 is about 4744.8182262338. The cubic root of 22513300 is about 282.3664233928.

Adding to 22513300 its reverse (331522), we get a palindrome (22844822).

The spelling of 22513300 in words is "twenty-two million, five hundred thirteen thousand, three hundred".