516457820 has 24 divisors (see below), whose sum is σ = 1085014224. Its totient is φ = 206496896.

The previous prime is 516457787. The next prime is 516457831. The reversal of 516457820 is 28754615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68267 + ... + 75453.

It is an arithmetic number, because the mean of its divisors is an integer number (45208926).

Almost surely, 2^516457820 is an apocalyptic number.

It is an amenable number.

516457820 is an abundant number, since it is smaller than the sum of its proper divisors (568556404).

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

516457820 is a wasteful number, since it uses less digits than its factorization.

516457820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789 (or 10787 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 516457820 is about 22725.7083497963. The cubic root of 516457820 is about 802.3150753204.

The spelling of 516457820 in words is "five hundred sixteen million, four hundred fifty-seven thousand, eight hundred twenty".