22864690 has 8 divisors (see below), whose sum is σ = 41156460. Its totient is φ = 9145872.

The previous prime is 22864687. The next prime is 22864693. The reversal of 22864690 is 9646822.

It is an interprime number because it is at equal distance from previous prime (22864687) and next prime (22864693).

It can be written as a sum of positive squares in 2 ways, for example, as 21986721 + 877969 = 4689^2 + 937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22864690² = 1045588097592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22864693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143225 + ... + 1143244.

Almost surely, 2^22864690 is an apocalyptic number.

22864690 is a deficient number, since it is larger than the sum of its proper divisors (18291770).

22864690 is a wasteful number, since it uses less digits than its factorization.

22864690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286476.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 22864690 is about 4781.7036712870. The cubic root of 22864690 is about 283.8279143292.

The spelling of 22864690 in words is "twenty-two million, eight hundred sixty-four thousand, six hundred ninety".