20056535 has 16 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 15330720.

The previous prime is 20056523. The next prime is 20056559. The reversal of 20056535 is 53565002.

It is not a de Polignac number, because 20056535 - 2⁶ = 20056471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12086 + ... + 13644.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^20056535 is an apocalyptic number.

20056535 is a deficient number, since it is larger than the sum of its proper divisors (5103145).

20056535 is a wasteful number, since it uses less digits than its factorization.

20056535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 20056535 is about 4478.4522996232. The cubic root of 20056535 is about 271.6972870417.

The spelling of 20056535 in words is "twenty million, fifty-six thousand, five hundred thirty-five".