22398730 has 16 divisors (see below), whose sum is σ = 41708520. Its totient is φ = 8650432.

The previous prime is 22398713. The next prime is 22398731. The reversal of 22398730 is 3789322.

It can be written as a sum of positive squares in 4 ways, for example, as 10169721 + 12229009 = 3189^2 + 3497^2 .

It is a super-2 number, since 2×22398730² = 1003406211225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22398731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38329 + ... + 38908.

Almost surely, 2^22398730 is an apocalyptic number.

22398730 is a deficient number, since it is larger than the sum of its proper divisors (19309790).

22398730 is a wasteful number, since it uses less digits than its factorization.

22398730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77273.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 22398730 is about 4732.7296563400. The cubic root of 22398730 is about 281.8866217597.

The spelling of 22398730 in words is "twenty-two million, three hundred ninety-eight thousand, seven hundred thirty".