517492640 has 96 divisors (see below), whose sum is σ = 1458051840. Its totient is φ = 169703424.

The previous prime is 517492627. The next prime is 517492667. The reversal of 517492640 is 46294715.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 517492594 and 517492603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15716 + ... + 35804.

It is an arithmetic number, because the mean of its divisors is an integer number (15188040).

Almost surely, 2^517492640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 517492640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729025920).

517492640 is an abundant number, since it is smaller than the sum of its proper divisors (940559200).

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

517492640 is a wasteful number, since it uses less digits than its factorization.

517492640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20134 (or 20126 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 517492640 is about 22748.4645635700. The cubic root of 517492640 is about 802.8505806731.

The spelling of 517492640 in words is "five hundred seventeen million, four hundred ninety-two thousand, six hundred forty".