23621018 has 16 divisors (see below), whose sum is σ = 36405600. Its totient is φ = 11488176.

The previous prime is 23621011. The next prime is 23621027. The reversal of 23621018 is 81012632.

It is a junction number, because it is equal to n+sod(n) for n = 23620984 and 23621002.

It is not an unprimeable number, because it can be changed into a prime (23621011) 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 7 ways as a sum of consecutive naturals, for example, 29621 + ... + 30407.

It is an arithmetic number, because the mean of its divisors is an integer number (2275350).

Almost surely, 2^23621018 is an apocalyptic number.

23621018 is a deficient number, since it is larger than the sum of its proper divisors (12784582).

23621018 is a wasteful number, since it uses less digits than its factorization.

23621018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 23621018 is about 4860.1458825842. The cubic root of 23621018 is about 286.9235552572.

The spelling of 23621018 in words is "twenty-three million, six hundred twenty-one thousand, eighteen".