20044402 has 16 divisors (see below), whose sum is σ = 34750080. Its totient is φ = 8493408.

The previous prime is 20044397. The next prime is 20044447. The reversal of 20044402 is 20444002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6798 + ... + 9289.

It is an arithmetic number, because the mean of its divisors is an integer number (2171880).

Almost surely, 2^20044402 is an apocalyptic number.

20044402 is a deficient number, since it is larger than the sum of its proper divisors (14705678).

20044402 is a wasteful number, since it uses less digits than its factorization.

20044402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16185.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20044402 is about 4477.0974972632. The cubic root of 20044402 is about 271.6424891394.

Adding to 20044402 its reverse (20444002), we get a palindrome (40488404).

It can be divided in two parts, 200 and 44402, that multiplied together give a square (8880400 = 2980²).

The spelling of 20044402 in words is "twenty million, forty-four thousand, four hundred two".