20044618 has 24 divisors (see below), whose sum is σ = 33386724. Its totient is φ = 9018240.

The previous prime is 20044589. The next prime is 20044627. The reversal of 20044618 is 81644002.

It can be written as a sum of positive squares in 2 ways, for example, as 20043529 + 1089 = 4477^2 + 33^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20044592 and 20044601.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26980 + ... + 27712.

Almost surely, 2^20044618 is an apocalyptic number.

20044618 is a deficient number, since it is larger than the sum of its proper divisors (13342106).

20044618 is a wasteful number, since it uses less digits than its factorization.

20044618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20044618 is about 4477.1216199697. The cubic root of 20044618 is about 271.6434648826.

The spelling of 20044618 in words is "twenty million, forty-four thousand, six hundred eighteen".