255247980 has 96 divisors (see below), whose sum is σ = 773572800. Its totient is φ = 62512128.

The previous prime is 255247943. The next prime is 255247999. The reversal of 255247980 is 89742552.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177906 + ... + 179334.

It is an arithmetic number, because the mean of its divisors is an integer number (8058050).

Almost surely, 2^255247980 is an apocalyptic number.

255247980 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 255247980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386786400).

255247980 is an abundant number, since it is smaller than the sum of its proper divisors (518324820).

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

255247980 is a wasteful number, since it uses less digits than its factorization.

255247980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 255247980 is about 15976.4820908734. The cubic root of 255247980 is about 634.3380623659.

The spelling of 255247980 in words is "two hundred fifty-five million, two hundred forty-seven thousand, nine hundred eighty".