516216340 has 24 divisors (see below), whose sum is σ = 1119025152. Its totient is φ = 199825440.

The previous prime is 516216331. The next prime is 516216359. The reversal of 516216340 is 43612615.

It is a junction number, because it is equal to n+sod(n) for n = 516216299 and 516216308.

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, 415684 + ... + 416923.

It is an arithmetic number, because the mean of its divisors is an integer number (46626048).

Almost surely, 2^516216340 is an apocalyptic number.

It is an amenable number.

516216340 is an abundant number, since it is smaller than the sum of its proper divisors (602808812).

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

516216340 is a wasteful number, since it uses less digits than its factorization.

516216340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832647 (or 832645 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 516216340 is about 22720.3948029078. The cubic root of 516216340 is about 802.1900097676.

Adding to 516216340 its reverse (43612615), we get a palindrome (559828955).

The spelling of 516216340 in words is "five hundred sixteen million, two hundred sixteen thousand, three hundred forty".