20040044 has 12 divisors (see below), whose sum is σ = 36279600. Its totient is φ = 9674448.

The previous prime is 20039993. The next prime is 20040049. The reversal of 20040044 is 44004002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86264 + ... + 86495.

It is an arithmetic number, because the mean of its divisors is an integer number (3023300).

Almost surely, 2^20040044 is an apocalyptic number.

It is an amenable number.

20040044 is a deficient number, since it is larger than the sum of its proper divisors (16239556).

20040044 is a wasteful number, since it uses less digits than its factorization.

20040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172792 (or 172790 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 20040044 is about 4476.6107715547. The cubic root of 20040044 is about 271.6228011192.

Adding to 20040044 its reverse (44004002), we get a palindrome (64044046).

The spelling of 20040044 in words is "twenty million, forty thousand, forty-four".