516781244 has 36 divisors (see below), whose sum is σ = 1053360000. Its totient is φ = 221195520.

The previous prime is 516781241. The next prime is 516781277. The reversal of 516781244 is 442187615.

It is a junction number, because it is equal to n+sod(n) for n = 516781198 and 516781207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516781241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243749 + ... + 245859.

It is an arithmetic number, because the mean of its divisors is an integer number (29260000).

Almost surely, 2^516781244 is an apocalyptic number.

It is an amenable number.

516781244 is an abundant number, since it is smaller than the sum of its proper divisors (536578756).

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

516781244 is a wasteful number, since it uses less digits than its factorization.

516781244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3369 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 516781244 is about 22732.8230539016. The cubic root of 516781244 is about 802.4825196517.

The spelling of 516781244 in words is "five hundred sixteen million, seven hundred eighty-one thousand, two hundred forty-four".