516343640 has 32 divisors (see below), whose sum is σ = 1164706560. Its totient is φ = 206016000.

The previous prime is 516343609. The next prime is 516343643. The reversal of 516343640 is 46343615.

It is a super-2 number, since 2×516343640² = 533221509136899200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 516343597 and 516343606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516343643) 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, 56 + ... + 32135.

It is an arithmetic number, because the mean of its divisors is an integer number (36397080).

Almost surely, 2^516343640 is an apocalyptic number.

It is an amenable number.

516343640 is an abundant number, since it is smaller than the sum of its proper divisors (648362920).

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

516343640 is a wasteful number, since it uses less digits than its factorization.

516343640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32603 (or 32599 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 516343640 is about 22723.1960780168. The cubic root of 516343640 is about 802.2559449109.

The spelling of 516343640 in words is "five hundred sixteen million, three hundred forty-three thousand, six hundred forty".