20044556 has 12 divisors (see below), whose sum is σ = 40089168. Its totient is φ = 8590512.

The previous prime is 20044529. The next prime is 20044567. The reversal of 20044556 is 65544002.

20044556 is an admirable 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, 357911 + ... + 357966.

It is an arithmetic number, because the mean of its divisors is an integer number (3340764).

Almost surely, 2^20044556 is an apocalyptic number.

It is an amenable number.

20044556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20044556 is a wasteful number, since it uses less digits than its factorization.

20044556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715888 (or 715886 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20044556 is about 4477.1146958728. The cubic root of 20044556 is about 271.6431848088.

Adding to 20044556 its reverse (65544002), we get a palindrome (85588558).

The spelling of 20044556 in words is "twenty million, forty-four thousand, five hundred fifty-six".