516345004 has 12 divisors (see below), whose sum is σ = 1032690064. Its totient is φ = 221290704.

The previous prime is 516344999. The next prime is 516345017. The reversal of 516345004 is 400543615.

516345004 is an admirable number.

It is a super-2 number, since 2×516345004² = 533224326311520032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 18440893 = 516345004 / (5 + 1 + 6 + 3 + 4 + 5 + 0 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9220419 + ... + 9220474.

Almost surely, 2^516345004 is an apocalyptic number.

It is an amenable number.

516345004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

516345004 is a wasteful number, since it uses less digits than its factorization.

516345004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18440904 (or 18440902 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 516345004 is about 22723.2260913806. The cubic root of 516345004 is about 802.2566513372.

Adding to 516345004 its reverse (400543615), we get a palindrome (916888619).

The spelling of 516345004 in words is "five hundred sixteen million, three hundred forty-five thousand, four".