255843984 has 80 divisors (see below), whose sum is σ = 725310720. Its totient is φ = 77066880.

The previous prime is 255843979. The next prime is 255844013. The reversal of 255843984 is 489348552.

It is a super-2 number, since 2×255843984² = 130912288297984512, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93159 + ... + 95865.

It is an arithmetic number, because the mean of its divisors is an integer number (9066384).

Almost surely, 2^255843984 is an apocalyptic number.

255843984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255843984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362655360).

255843984 is an abundant number, since it is smaller than the sum of its proper divisors (469466736).

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

255843984 is a wasteful number, since it uses less digits than its factorization.

255843984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2902 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 255843984 is about 15995.1237569454. The cubic root of 255843984 is about 634.8314050109.

The spelling of 255843984 in words is "two hundred fifty-five million, eight hundred forty-three thousand, nine hundred eighty-four".