255834240 has 128 divisors (see below), whose sum is σ = 858513600. Its totient is φ = 64622592.

The previous prime is 255834217. The next prime is 255834287. The reversal of 255834240 is 42438552.

It is a tau number, because it is divible by the number of its divisors (128).

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, 32974 + ... + 39986.

Almost surely, 2^255834240 is an apocalyptic number.

255834240 is a gapful number since it is divisible by the number (20) 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 255834240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429256800).

255834240 is an abundant number, since it is smaller than the sum of its proper divisors (602679360).

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

255834240 is a wasteful number, since it uses less digits than its factorization.

255834240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054 (or 7042 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 255834240 is about 15994.8191612159. The cubic root of 255834240 is about 634.8233455735.

The spelling of 255834240 in words is "two hundred fifty-five million, eight hundred thirty-four thousand, two hundred forty".