20164044 has 48 divisors (see below), whose sum is σ = 48254976. Its totient is φ = 6552000.

The previous prime is 20164013. The next prime is 20164049. The reversal of 20164044 is 44046102.

It is a self number, because there is not a number n which added to its sum of digits gives 20164044.

It is not an unprimeable number, because it can be changed into a prime (20164049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153859 + ... + 153989.

It is an arithmetic number, because the mean of its divisors is an integer number (1005312).

Almost surely, 2^20164044 is an apocalyptic number.

It is an amenable number.

20164044 is an abundant number, since it is smaller than the sum of its proper divisors (28090932).

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

20164044 is a wasteful number, since it uses less digits than its factorization.

20164044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20164044 is about 4490.4391767398. The cubic root of 20164044 is about 272.1818816678.

The spelling of 20164044 in words is "twenty million, one hundred sixty-four thousand, forty-four".