20044455 has 16 divisors (see below), whose sum is σ = 32171904. Its totient is φ = 10656800.

The previous prime is 20044447. The next prime is 20044459. The reversal of 20044455 is 55444002.

It is not a de Polignac number, because 20044455 - 2³ = 20044447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044459) 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, 3280 + ... + 7130.

It is an arithmetic number, because the mean of its divisors is an integer number (2010744).

Almost surely, 2^20044455 is an apocalyptic number.

20044455 is a deficient number, since it is larger than the sum of its proper divisors (12127449).

20044455 is a wasteful number, since it uses less digits than its factorization.

20044455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 20044455 is about 4477.1034162726. The cubic root of 20044455 is about 271.6427285585.

Adding to 20044455 its reverse (55444002), we get a palindrome (75488457).

The spelling of 20044455 in words is "twenty million, forty-four thousand, four hundred fifty-five".