20255774 has 32 divisors (see below), whose sum is σ = 38278656. Its totient is φ = 7809120.

The previous prime is 20255773. The next prime is 20255783. The reversal of 20255774 is 47755202.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 20255774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255771) by changing a digit.

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, 15224 + ... + 16500.

It is an arithmetic number, because the mean of its divisors is an integer number (1196208).

Almost surely, 2^20255774 is an apocalyptic number.

20255774 is a deficient number, since it is larger than the sum of its proper divisors (18022882).

20255774 is a wasteful number, since it uses less digits than its factorization.

20255774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 20255774 is about 4500.6415098295. The cubic root of 20255774 is about 272.5939927699.

The spelling of 20255774 in words is "twenty million, two hundred fifty-five thousand, seven hundred seventy-four".