23218648 has 16 divisors (see below), whose sum is σ = 43879680. Its totient is φ = 11517408.

The previous prime is 23218631. The next prime is 23218673. The reversal of 23218648 is 84681232.

It is a super-2 number, since 2×23218648² = 1078211229895808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10411 + ... + 12442.

It is an arithmetic number, because the mean of its divisors is an integer number (2742480).

Almost surely, 2^23218648 is an apocalyptic number.

It is an amenable number.

23218648 is a deficient number, since it is larger than the sum of its proper divisors (20661032).

23218648 is a wasteful number, since it uses less digits than its factorization.

23218648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22986 (or 22982 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 23218648 is about 4818.5732328149. The cubic root of 23218648 is about 285.2850252065.

The spelling of 23218648 in words is "twenty-three million, two hundred eighteen thousand, six hundred forty-eight".