517912872 has 32 divisors (see below), whose sum is σ = 1302026400. Its totient is φ = 171671744.

The previous prime is 517912867. The next prime is 517912897. The reversal of 517912872 is 278219715.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 55983 + ... + 64574.

It is an arithmetic number, because the mean of its divisors is an integer number (40688325).

Almost surely, 2^517912872 is an apocalyptic number.

It is an amenable number.

517912872 is an abundant number, since it is smaller than the sum of its proper divisors (784113528).

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

517912872 is a wasteful number, since it uses less digits than its factorization.

517912872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120745 (or 120741 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

The square root of 517912872 is about 22757.6991807168. The cubic root of 517912872 is about 803.0678412328.

The spelling of 517912872 in words is "five hundred seventeen million, nine hundred twelve thousand, eight hundred seventy-two".