516239728 has 40 divisors (see below), whose sum is σ = 1075288320. Its totient is φ = 239325120.

The previous prime is 516239699. The next prime is 516239729. The reversal of 516239728 is 827932615.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516239729) 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, 3778 + ... + 32353.

It is an arithmetic number, because the mean of its divisors is an integer number (26882208).

Almost surely, 2^516239728 is an apocalyptic number.

It is an amenable number.

516239728 is an abundant number, since it is smaller than the sum of its proper divisors (559048592).

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

516239728 is a wasteful number, since it uses less digits than its factorization.

516239728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36205 (or 36199 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 516239728 is about 22720.9094888387. The cubic root of 516239728 is about 802.2021244148.

The spelling of 516239728 in words is "five hundred sixteen million, two hundred thirty-nine thousand, seven hundred twenty-eight".