255017920 has 28 divisors (see below), whose sum is σ = 607262184. Its totient is φ = 102007040.

The previous prime is 255017891. The next prime is 255017921. The reversal of 255017920 is 29710552.

It is a super-2 number, since 2×255017920² = 130068279042252800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255017921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 398146 + ... + 398785.

Almost surely, 2^255017920 is an apocalyptic number.

255017920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255017920 is an abundant number, since it is smaller than the sum of its proper divisors (352244264).

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

255017920 is an equidigital number, since it uses as much as digits as its factorization.

255017920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796948 (or 796938 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 255017920 is about 15969.2805097788. The cubic root of 255017920 is about 634.1474246424.

The spelling of 255017920 in words is "two hundred fifty-five million, seventeen thousand, nine hundred twenty".