22510900 has 18 divisors (see below), whose sum is σ = 48848870. Its totient is φ = 9004320.

The previous prime is 22510889. The next prime is 22510903. The reversal of 22510900 is 901522.

It can be written as a sum of positive squares in 3 ways, for example, as 24336 + 22486564 = 156^2 + 4742^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22510903) 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, 112455 + ... + 112654.

Almost surely, 2^22510900 is an apocalyptic number.

22510900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22510900 is an abundant number, since it is smaller than the sum of its proper divisors (26337970).

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

22510900 is a wasteful number, since it uses less digits than its factorization.

22510900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225123 (or 225116 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 22510900 is about 4744.5653120175. The cubic root of 22510900 is about 282.3563892723.

The spelling of 22510900 in words is "twenty-two million, five hundred ten thousand, nine hundred".