255099240 has 256 divisors, whose sum is σ = 940896000. Its totient is φ = 60963840.

The previous prime is 255099203. The next prime is 255099259. The reversal of 255099240 is 42990552.

It is a happy number.

255099240 is a `hidden beast` number, since 25 + 509 + 92 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 255099195 and 255099204.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1294822 + ... + 1295018.

It is an arithmetic number, because the mean of its divisors is an integer number (3675375).

Almost surely, 2^255099240 is an apocalyptic number.

255099240 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 255099240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470448000).

255099240 is an abundant number, since it is smaller than the sum of its proper divisors (685796760).

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

255099240 is a wasteful number, since it uses less digits than its factorization.

255099240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 255099240 is about 15971.8264453381. The cubic root of 255099240 is about 634.2148230277.

The spelling of 255099240 in words is "two hundred fifty-five million, ninety-nine thousand, two hundred forty".