22500010 has 32 divisors (see below), whose sum is σ = 46185552. Its totient is φ = 7818240.

The previous prime is 22499999. The next prime is 22500011. The reversal of 22500010 is 1000522.

It can be written as a sum of positive squares in 8 ways, for example, as 9690769 + 12809241 = 3113^2 + 3579^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 22500010.

It is not an unprimeable number, because it can be changed into a prime (22500011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2881 + ... + 7300.

Almost surely, 2^22500010 is an apocalyptic number.

22500010 is an abundant number, since it is smaller than the sum of its proper divisors (23685542).

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

22500010 is a wasteful number, since it uses less digits than its factorization.

22500010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10218.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 22500010 is about 4743.4175443450. The cubic root of 22500010 is about 282.3108504881.

Adding to 22500010 its reverse (1000522), we get a palindrome (23500532).

The spelling of 22500010 in words is "twenty-two million, five hundred thousand, ten".