255943620 has 36 divisors (see below), whose sum is σ = 776362860. Its totient is φ = 68251584.

The previous prime is 255943603. The next prime is 255943631. The reversal of 255943620 is 26349552.

255943620 is a `hidden beast` number, since 2 + 5 + 594 + 3 + 62 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 169676676 + 86266944 = 13026^2 + 9288^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 710775 + ... + 711134.

It is an arithmetic number, because the mean of its divisors is an integer number (21565635).

Almost surely, 2^255943620 is an apocalyptic number.

255943620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255943620 is an abundant number, since it is smaller than the sum of its proper divisors (520419240).

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

255943620 is a wasteful number, since it uses less digits than its factorization.

255943620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421924 (or 1421919 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 255943620 is about 15998.2380279830. The cubic root of 255943620 is about 634.9138039944.

The spelling of 255943620 in words is "two hundred fifty-five million, nine hundred forty-three thousand, six hundred twenty".