517040232 has 64 divisors (see below), whose sum is σ = 1330560000. Its totient is φ = 167344320.

The previous prime is 517040231. The next prime is 517040233. The reversal of 517040232 is 232040715.

It is an interprime number because it is at equal distance from previous prime (517040231) and next prime (517040233).

It is a super-2 number, since 2×517040232² = 534661203013227648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (517040231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146019 + ... + 149517.

It is an arithmetic number, because the mean of its divisors is an integer number (20790000).

Almost surely, 2^517040232 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 517040232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665280000).

517040232 is an abundant number, since it is smaller than the sum of its proper divisors (813519768).

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

517040232 is a wasteful number, since it uses less digits than its factorization.

517040232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 517040232 is about 22738.5186852618. The cubic root of 517040232 is about 802.6165535625.

Adding to 517040232 its reverse (232040715), we get a palindrome (749080947).

The spelling of 517040232 in words is "five hundred seventeen million, forty thousand, two hundred thirty-two".