22398864 has 40 divisors (see below), whose sum is σ = 59734272. Its totient is φ = 7224960.

The previous prime is 22398851. The next prime is 22398881. The reversal of 22398864 is 46889322.

It is a congruent number.

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, 6039 + ... + 9014.

Almost surely, 2^22398864 is an apocalyptic number.

22398864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22398864 is an abundant number, since it is smaller than the sum of its proper divisors (37335408).

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

22398864 is a wasteful number, since it uses less digits than its factorization.

22398864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15095 (or 15089 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 22398864 is about 4732.7438130539. The cubic root of 22398864 is about 281.8871838858.

The spelling of 22398864 in words is "twenty-two million, three hundred ninety-eight thousand, eight hundred sixty-four".