255264438 has 64 divisors (see below), whose sum is σ = 620524800. Its totient is φ = 68933760.

The previous prime is 255264431. The next prime is 255264463. The reversal of 255264438 is 834462552.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 255264396 and 255264405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255264431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19753 + ... + 30011.

It is an arithmetic number, because the mean of its divisors is an integer number (9695700).

Almost surely, 2^255264438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255264438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310262400).

255264438 is an abundant number, since it is smaller than the sum of its proper divisors (365260362).

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

255264438 is a wasteful number, since it uses less digits than its factorization.

255264438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10317.

The product of its digits is 230400, while the sum is 39.

The square root of 255264438 is about 15976.9971521560. The cubic root of 255264438 is about 634.3516957895.

The spelling of 255264438 in words is "two hundred fifty-five million, two hundred sixty-four thousand, four hundred thirty-eight".