22100490 has 24 divisors (see below), whose sum is σ = 57461508. Its totient is φ = 5893440.

The previous prime is 22100479. The next prime is 22100497. The reversal of 22100490 is 9400122.

It can be written as a sum of positive squares in 2 ways, for example, as 22099401 + 1089 = 4701^2 + 33^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22100497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122691 + ... + 122870.

Almost surely, 2^22100490 is an apocalyptic number.

22100490 is an abundant number, since it is smaller than the sum of its proper divisors (35361018).

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

22100490 is a wasteful number, since it uses less digits than its factorization.

22100490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245574 (or 245571 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 22100490 is about 4701.1158249930. The cubic root of 22100490 is about 280.6299168455.

The spelling of 22100490 in words is "twenty-two million, one hundred thousand, four hundred ninety".