20056442 has 32 divisors (see below), whose sum is σ = 36480000. Its totient is φ = 8087040.

The previous prime is 20056433. The next prime is 20056453. The reversal of 20056442 is 24465002.

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 15 ways as a sum of consecutive naturals, for example, 15434 + ... + 16682.

It is an arithmetic number, because the mean of its divisors is an integer number (1140000).

Almost surely, 2^20056442 is an apocalyptic number.

20056442 is a deficient number, since it is larger than the sum of its proper divisors (16423558).

20056442 is a wasteful number, since it uses less digits than its factorization.

20056442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20056442 is about 4478.4419165598. The cubic root of 20056442 is about 271.6968670973.

The spelling of 20056442 in words is "twenty million, fifty-six thousand, four hundred forty-two".