255263238 has 48 divisors (see below), whose sum is σ = 592091136. Its totient is φ = 82338120.

The previous prime is 255263237. The next prime is 255263243. The reversal of 255263238 is 832362552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255263237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6595 + ... + 23537.

It is an arithmetic number, because the mean of its divisors is an integer number (12335232).

Almost surely, 2^255263238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255263238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296045568).

255263238 is an abundant number, since it is smaller than the sum of its proper divisors (336827898).

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

255263238 is a wasteful number, since it uses less digits than its factorization.

255263238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16991 (or 16979 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 255263238 is about 15976.9595981213. The cubic root of 255263238 is about 634.3507017572.

It can be divided in two parts, 2552632 and 38, that added together give a triangular number (2552670 = T₂₂₅₉).

The spelling of 255263238 in words is "two hundred fifty-five million, two hundred sixty-three thousand, two hundred thirty-eight".