20044401 has 16 divisors (see below), whose sum is σ = 28941696. Its totient is φ = 12266496.

The previous prime is 20044397. The next prime is 20044447. The reversal of 20044401 is 10444002.

It is not a de Polignac number, because 20044401 - 2² = 20044397 is a prime.

It is a super-2 number, since 2×20044401² = 803556022897602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20044501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6196 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (1808856).

Almost surely, 2^20044401 is an apocalyptic number.

It is an amenable number.

20044401 is a deficient number, since it is larger than the sum of its proper divisors (8897295).

20044401 is a wasteful number, since it uses less digits than its factorization.

20044401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20044401 is about 4477.0973855837. The cubic root of 20044401 is about 271.6424846220.

Adding to 20044401 its reverse (10444002), we get a palindrome (30488403).

The spelling of 20044401 in words is "twenty million, forty-four thousand, four hundred one".