517340428 has 24 divisors (see below), whose sum is σ = 989936640. Its totient is φ = 234610320.

The previous prime is 517340423. The next prime is 517340429. The reversal of 517340428 is 824043715.

It is a super-2 number, since 2×517340428² = 535282236886446368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 517340393 and 517340402.

It is not an unprimeable number, because it can be changed into a prime (517340423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5925 + ... + 32707.

It is an arithmetic number, because the mean of its divisors is an integer number (41247360).

Almost surely, 2^517340428 is an apocalyptic number.

It is an amenable number.

517340428 is a deficient number, since it is larger than the sum of its proper divisors (472596212).

517340428 is a wasteful number, since it uses less digits than its factorization.

517340428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27237 (or 27235 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 517340428 is about 22745.1187730467. The cubic root of 517340428 is about 802.7718578298.

The spelling of 517340428 in words is "five hundred seventeen million, three hundred forty thousand, four hundred twenty-eight".