255338790 has 32 divisors (see below), whose sum is σ = 700358400. Its totient is φ = 58363104.

The previous prime is 255338753. The next prime is 255338803. The reversal of 255338790 is 97833552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 607740 + ... + 608159.

It is an arithmetic number, because the mean of its divisors is an integer number (21886200).

Almost surely, 2^255338790 is an apocalyptic number.

255338790 is an abundant number, since it is smaller than the sum of its proper divisors (445019610).

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

255338790 is a wasteful number, since it uses less digits than its factorization.

255338790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215916.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 255338790 is about 15979.3238279972. The cubic root of 255338790 is about 634.4132799504.

The spelling of 255338790 in words is "two hundred fifty-five million, three hundred thirty-eight thousand, seven hundred ninety".