255989448 has 288 divisors, whose sum is σ = 869581440. Its totient is φ = 67034880.

The previous prime is 255989441. The next prime is 255989453. The reversal of 255989448 is 844989552.

It is a happy number.

255989448 is a `hidden beast` number, since 2 + 5 + 598 + 9 + 4 + 48 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 255989394 and 255989403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255989441) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5446561 + ... + 5446607.

It is an arithmetic number, because the mean of its divisors is an integer number (3019380).

Almost surely, 2^255989448 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 255989448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434790720).

255989448 is an abundant number, since it is smaller than the sum of its proper divisors (613591992).

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

255989448 is a wasteful number, since it uses less digits than its factorization.

255989448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 99 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 255989448 is about 15999.6702466020. The cubic root of 255989448 is about 634.9516965758.

The spelling of 255989448 in words is "two hundred fifty-five million, nine hundred eighty-nine thousand, four hundred forty-eight".