515796780 has 96 divisors (see below), whose sum is σ = 1468938240. Its totient is φ = 135216640.

The previous prime is 515796763. The next prime is 515796877. The reversal of 515796780 is 87697515.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1076581 + ... + 1077059.

It is an arithmetic number, because the mean of its divisors is an integer number (15301440).

Almost surely, 2^515796780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515796780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734469120).

515796780 is an abundant number, since it is smaller than the sum of its proper divisors (953141460).

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

515796780 is a wasteful number, since it uses less digits than its factorization.

515796780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 48.

The square root of 515796780 is about 22711.1598118634. The cubic root of 515796780 is about 801.9726215408.

The spelling of 515796780 in words is "five hundred fifteen million, seven hundred ninety-six thousand, seven hundred eighty".