22749498 has 60 divisors (see below), whose sum is σ = 53938170. Its totient is φ = 7165584.

The previous prime is 22749497. The next prime is 22749511. The reversal of 22749498 is 89494722.

It can be written as a sum of positive squares in only one way, i.e., 21316689 + 1432809 = 4617^2 + 1197^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22749491) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 58288 + ... + 58676.

Almost surely, 2^22749498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22749498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26969085).

22749498 is an abundant number, since it is smaller than the sum of its proper divisors (31188672).

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

22749498 is a wasteful number, since it uses less digits than its factorization.

22749498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 413 counting only the distinct ones).

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

The square root of 22749498 is about 4769.6433828956. The cubic root of 22749498 is about 283.3504712433.

The spelling of 22749498 in words is "twenty-two million, seven hundred forty-nine thousand, four hundred ninety-eight".