515722272 has 96 divisors (see below), whose sum is σ = 1493614080. Its totient is φ = 154798080.

The previous prime is 515722267. The next prime is 515722289. The reversal of 515722272 is 272227515.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46129 + ... + 56207.

It is an arithmetic number, because the mean of its divisors is an integer number (15558480).

Almost surely, 2^515722272 is an apocalyptic number.

515722272 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515722272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746807040).

515722272 is an abundant number, since it is smaller than the sum of its proper divisors (977891808).

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

515722272 is a wasteful number, since it uses less digits than its factorization.

515722272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10146 (or 10138 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 515722272 is about 22709.5194136732. The cubic root of 515722272 is about 801.9340041009.

Adding to 515722272 its reverse (272227515), we get a palindrome (787949787).

The spelling of 515722272 in words is "five hundred fifteen million, seven hundred twenty-two thousand, two hundred seventy-two".