22402998 has 12 divisors (see below), whose sum is σ = 48539868. Its totient is φ = 7467660.

The previous prime is 22402979. The next prime is 22402999. The reversal of 22402998 is 89920422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622288 + ... + 622323.

It is an arithmetic number, because the mean of its divisors is an integer number (4044989).

Almost surely, 2^22402998 is an apocalyptic number.

22402998 is an abundant number, since it is smaller than the sum of its proper divisors (26136870).

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

22402998 is a wasteful number, since it uses less digits than its factorization.

22402998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244619 (or 1244616 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22402998 is about 4733.1805374399. The cubic root of 22402998 is about 281.9045247940.

The spelling of 22402998 in words is "twenty-two million, four hundred two thousand, nine hundred ninety-eight".