255940238 has 16 divisors (see below), whose sum is σ = 386225280. Its totient is φ = 127201536.

The previous prime is 255940231. The next prime is 255940277. The reversal of 255940238 is 832049552.

255940238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255940231) 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, 414506 + ... + 415122.

It is an arithmetic number, because the mean of its divisors is an integer number (24139080).

Almost surely, 2^255940238 is an apocalyptic number.

255940238 is a deficient number, since it is larger than the sum of its proper divisors (130285042).

255940238 is a wasteful number, since it uses less digits than its factorization.

255940238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 255940238 is about 15998.1323284938. The cubic root of 255940238 is about 634.9110074307.

The spelling of 255940238 in words is "two hundred fifty-five million, nine hundred forty thousand, two hundred thirty-eight".