20044415 has 4 divisors (see below), whose sum is σ = 24053304. Its totient is φ = 16035528.

The previous prime is 20044397. The next prime is 20044447. The reversal of 20044415 is 51444002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20044415 - 2⁶ = 20044351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004437 + ... + 2004446.

It is an arithmetic number, because the mean of its divisors is an integer number (6013326).

Almost surely, 2^20044415 is an apocalyptic number.

20044415 is a deficient number, since it is larger than the sum of its proper divisors (4008889).

20044415 is an equidigital number, since it uses as much as digits as its factorization.

20044415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008888.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20044415 is about 4477.0989490964. The cubic root of 20044415 is about 271.6425478648.

Adding to 20044415 its reverse (51444002), we get a palindrome (71488417).

The spelling of 20044415 in words is "twenty million, forty-four thousand, four hundred fifteen".