255247830 has 48 divisors (see below), whose sum is σ = 681589584. Its totient is φ = 66225600.

The previous prime is 255247819. The next prime is 255247891. The reversal of 255247830 is 38742552.

255247830 is a `hidden beast` number, since 2 + 552 + 4 + 78 + 30 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34996 + ... + 41655.

It is an arithmetic number, because the mean of its divisors is an integer number (14199783).

Almost surely, 2^255247830 is an apocalyptic number.

255247830 is an abundant number, since it is smaller than the sum of its proper divisors (426341754).

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

255247830 is a wasteful number, since it uses less digits than its factorization.

255247830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76701 (or 76698 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 255247830 is about 15976.4773964726. The cubic root of 255247830 is about 634.3379381067.

The spelling of 255247830 in words is "two hundred fifty-five million, two hundred forty-seven thousand, eight hundred thirty".