22490700 has 72 divisors (see below), whose sum is σ = 66193680. Its totient is φ = 5894400.

The previous prime is 22490693. The next prime is 22490707. The reversal of 22490700 is 709422.

It is an interprime number because it is at equal distance from previous prime (22490693) and next prime (22490707).

It is not an unprimeable number, because it can be changed into a prime (22490707) 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 23 ways as a sum of consecutive naturals, for example, 17686 + ... + 18914.

Almost surely, 2^22490700 is an apocalyptic number.

22490700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22490700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33096840).

22490700 is an abundant number, since it is smaller than the sum of its proper divisors (43702980).

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

22490700 is a wasteful number, since it uses less digits than its factorization.

22490700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 22490700 is about 4742.4360828587. The cubic root of 22490700 is about 282.2719071482.

The spelling of 22490700 in words is "twenty-two million, four hundred ninety thousand, seven hundred".