255330240 has 112 divisors (see below), whose sum is σ = 884407680. Its totient is φ = 61895680.

The previous prime is 255330223. The next prime is 255330253. The reversal of 255330240 is 42033552.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 255330240.

It is a congruent number.

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, 1530 + ... + 22649.

Almost surely, 2^255330240 is an apocalyptic number.

255330240 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 255330240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442203840).

255330240 is an abundant number, since it is smaller than the sum of its proper divisors (629077440).

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

255330240 is a wasteful number, since it uses less digits than its factorization.

255330240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24210 (or 24200 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 255330240 is about 15979.0562925349. The cubic root of 255330240 is about 634.4061987778.

Adding to 255330240 its reverse (42033552), we get a palindrome (297363792).

The spelling of 255330240 in words is "two hundred fifty-five million, three hundred thirty thousand, two hundred forty".