22398490 has 16 divisors (see below), whose sum is σ = 40497480. Its totient is φ = 8919360.

The previous prime is 22398479. The next prime is 22398533. The reversal of 22398490 is 9489322.

It can be written as a sum of positive squares in 4 ways, for example, as 21150801 + 1247689 = 4599^2 + 1117^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601 + ... + 7180.

Almost surely, 2^22398490 is an apocalyptic number.

22398490 is a deficient number, since it is larger than the sum of its proper divisors (18098990).

22398490 is a wasteful number, since it uses less digits than its factorization.

22398490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10017.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 22398490 is about 4732.7043009256. The cubic root of 22398490 is about 281.8856149610.

The spelling of 22398490 in words is "twenty-two million, three hundred ninety-eight thousand, four hundred ninety".