20056434 has 16 divisors (see below), whose sum is σ = 40771200. Its totient is φ = 6575760.

The previous prime is 20056433. The next prime is 20056453. The reversal of 20056434 is 43465002.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20056433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27034 + ... + 27765.

It is an arithmetic number, because the mean of its divisors is an integer number (2548200).

Almost surely, 2^20056434 is an apocalyptic number.

20056434 is an abundant number, since it is smaller than the sum of its proper divisors (20714766).

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

20056434 is a wasteful number, since it uses less digits than its factorization.

20056434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54865.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20056434 is about 4478.4410233920. The cubic root of 20056434 is about 271.6968309730.

The spelling of 20056434 in words is "twenty million, fifty-six thousand, four hundred thirty-four".