20020044 has 24 divisors (see below), whose sum is σ = 50960448. Its totient is φ = 6066640.

The previous prime is 20020027. The next prime is 20020093. The reversal of 20020044 is 44002002.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 75702 + ... + 75965.

It is an arithmetic number, because the mean of its divisors is an integer number (2123352).

Almost surely, 2^20020044 is an apocalyptic number.

It is an amenable number.

20020044 is an abundant number, since it is smaller than the sum of its proper divisors (30940404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020044 is a wasteful number, since it uses less digits than its factorization.

20020044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151685 (or 151683 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20020044 is about 4474.3763811284. The cubic root of 20020044 is about 271.5324110278.

Adding to 20020044 its reverse (44002002), we get a palindrome (64022046).

The spelling of 20020044 in words is "twenty million, twenty thousand, forty-four".