255748238 has 24 divisors (see below), whose sum is σ = 408872424. Its totient is φ = 119952000.

The previous prime is 255748237. The next prime is 255748243. The reversal of 255748238 is 832847552.

It is a super-2 number, since 2×255748238² = 130814322480209288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255748237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242813 + ... + 243863.

It is an arithmetic number, because the mean of its divisors is an integer number (17036351).

Almost surely, 2^255748238 is an apocalyptic number.

255748238 is a deficient number, since it is larger than the sum of its proper divisors (153124186).

255748238 is a wasteful number, since it uses less digits than its factorization.

255748238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1491 counting only the distinct ones).

The product of its digits is 537600, while the sum is 44.

The square root of 255748238 is about 15992.1305022189. The cubic root of 255748238 is about 634.7522028989.

The spelling of 255748238 in words is "two hundred fifty-five million, seven hundred forty-eight thousand, two hundred thirty-eight".