255891792 has 80 divisors (see below), whose sum is σ = 717731840. Its totient is φ = 78091776.

The previous prime is 255891787. The next prime is 255891793. The reversal of 255891792 is 297198552.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255891793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77634 + ... + 80862.

It is an arithmetic number, because the mean of its divisors is an integer number (8971648).

Almost surely, 2^255891792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255891792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358865920).

255891792 is an abundant number, since it is smaller than the sum of its proper divisors (461840048).

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

255891792 is a wasteful number, since it uses less digits than its factorization.

255891792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380 (or 3374 counting only the distinct ones).

The product of its digits is 453600, while the sum is 48.

The square root of 255891792 is about 15996.6181425950. The cubic root of 255891792 is about 634.8709449017.

The spelling of 255891792 in words is "two hundred fifty-five million, eight hundred ninety-one thousand, seven hundred ninety-two".