517878072 has 48 divisors (see below), whose sum is σ = 1485095040. Its totient is φ = 162471168.

The previous prime is 517878071. The next prime is 517878073. The reversal of 517878072 is 270878715.

It is an interprime number because it is at equal distance from previous prime (517878071) and next prime (517878073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517878071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210328 + ... + 212775.

It is an arithmetic number, because the mean of its divisors is an integer number (30939480).

Almost surely, 2^517878072 is an apocalyptic number.

It is an amenable number.

517878072 is an abundant number, since it is smaller than the sum of its proper divisors (967216968).

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

517878072 is a wasteful number, since it uses less digits than its factorization.

517878072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423132 (or 423125 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 45.

The square root of 517878072 is about 22756.9345914602. The cubic root of 517878072 is about 803.0498540459.

The spelling of 517878072 in words is "five hundred seventeen million, eight hundred seventy-eight thousand, seventy-two".