22490272 has 24 divisors (see below), whose sum is σ = 50603616. Its totient is φ = 9638592.

The previous prime is 22490257. The next prime is 22490287. The reversal of 22490272 is 27209422.

It is an interprime number because it is at equal distance from previous prime (22490257) and next prime (22490287).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 22490272.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49978 + ... + 50425.

It is an arithmetic number, because the mean of its divisors is an integer number (2108484).

Almost surely, 2^22490272 is an apocalyptic number.

It is an amenable number.

22490272 is an abundant number, since it is smaller than the sum of its proper divisors (28113344).

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

22490272 is a wasteful number, since it uses less digits than its factorization.

22490272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100420 (or 100412 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22490272 is about 4742.3909581560. The cubic root of 22490272 is about 282.2701165838.

Adding to 22490272 its reverse (27209422), we get a palindrome (49699694).

The spelling of 22490272 in words is "twenty-two million, four hundred ninety thousand, two hundred seventy-two".