516481380 has 96 divisors (see below), whose sum is σ = 1614412800. Its totient is φ = 137078784.

The previous prime is 516481379. The next prime is 516481411. The reversal of 516481380 is 83184615.

516481380 is a `hidden beast` number, since 5 + 1 + 648 + 1 + 3 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118276 + ... + 122564.

It is an arithmetic number, because the mean of its divisors is an integer number (16816800).

Almost surely, 2^516481380 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 516481380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807206400).

516481380 is an abundant number, since it is smaller than the sum of its proper divisors (1097931420).

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

516481380 is a wasteful number, since it uses less digits than its factorization.

516481380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530 (or 4522 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 516481380 is about 22726.2266995645. The cubic root of 516481380 is about 802.3272752556.

The spelling of 516481380 in words is "five hundred sixteen million, four hundred eighty-one thousand, three hundred eighty".