516722220 has 192 divisors, whose sum is σ = 1848483840. Its totient is φ = 117386496.

The previous prime is 516722179. The next prime is 516722257. The reversal of 516722220 is 22227615.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 842634 + ... + 843246.

It is an arithmetic number, because the mean of its divisors is an integer number (9627520).

Almost surely, 2^516722220 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 516722220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924241920).

516722220 is an abundant number, since it is smaller than the sum of its proper divisors (1331761620).

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

516722220 is a wasteful number, since it uses less digits than its factorization.

516722220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 516722220 is about 22731.5248058726. The cubic root of 516722220 is about 802.4519667294.

Adding to 516722220 its reverse (22227615), we get a palindrome (538949835).

The spelling of 516722220 in words is "five hundred sixteen million, seven hundred twenty-two thousand, two hundred twenty".