20056506 has 48 divisors (see below), whose sum is σ = 43001280. Its totient is φ = 6233920.

The previous prime is 20056499. The next prime is 20056511. The reversal of 20056506 is 60565002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225310 + ... + 225398.

It is an arithmetic number, because the mean of its divisors is an integer number (895860).

Almost surely, 2^20056506 is an apocalyptic number.

20056506 is an abundant number, since it is smaller than the sum of its proper divisors (22944774).

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

20056506 is a wasteful number, since it uses less digits than its factorization.

20056506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 20056506 is about 4478.4490618963. The cubic root of 20056506 is about 271.6971560914.

The spelling of 20056506 in words is "twenty million, fifty-six thousand, five hundred six".