20211044 has 24 divisors (see below), whose sum is σ = 40938240. Its totient is φ = 8551296.

The previous prime is 20211031. The next prime is 20211077. The reversal of 20211044 is 44011202.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 7 ways as a sum of consecutive naturals, for example, 2357 + ... + 6780.

It is an arithmetic number, because the mean of its divisors is an integer number (1705760).

Almost surely, 2^20211044 is an apocalyptic number.

It is an amenable number.

20211044 is an abundant number, since it is smaller than the sum of its proper divisors (20727196).

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

20211044 is a wasteful number, since it uses less digits than its factorization.

20211044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227 (or 9225 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20211044 is about 4495.6694718362. The cubic root of 20211044 is about 272.3931921567.

Adding to 20211044 its reverse (44011202), we get a palindrome (64222246).

The spelling of 20211044 in words is "twenty million, two hundred eleven thousand, forty-four".