22498749 has 32 divisors (see below), whose sum is σ = 41027840. Its totient is φ = 11866176.

The previous prime is 22498747. The next prime is 22498781. The reversal of 22498749 is 94789422.

It is not a de Polignac number, because 22498749 - 2¹ = 22498747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22498747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2122 + ... + 7035.

It is an arithmetic number, because the mean of its divisors is an integer number (1282120).

Almost surely, 2^22498749 is an apocalyptic number.

It is an amenable number.

22498749 is a deficient number, since it is larger than the sum of its proper divisors (18529091).

22498749 is a wasteful number, since it uses less digits than its factorization.

22498749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186 (or 9180 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 22498749 is about 4743.2846214411. The cubic root of 22498749 is about 282.3055764070.

The spelling of 22498749 in words is "twenty-two million, four hundred ninety-eight thousand, seven hundred forty-nine".