255493020 has 24 divisors (see below), whose sum is σ = 715380624. Its totient is φ = 68131456.

The previous prime is 255493001. The next prime is 255493027. The reversal of 255493020 is 20394552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255493027) 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, 2129049 + ... + 2129168.

It is an arithmetic number, because the mean of its divisors is an integer number (29807526).

Almost surely, 2^255493020 is an apocalyptic number.

255493020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255493020 is an abundant number, since it is smaller than the sum of its proper divisors (459887604).

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

255493020 is a wasteful number, since it uses less digits than its factorization.

255493020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258229 (or 4258227 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 255493020 is about 15984.1490233293. The cubic root of 255493020 is about 634.5409872297.

The spelling of 255493020 in words is "two hundred fifty-five million, four hundred ninety-three thousand, twenty".