515418672 has 80 divisors (see below), whose sum is σ = 1362273920. Its totient is φ = 167878656.

The previous prime is 515418671. The next prime is 515418689. The reversal of 515418672 is 276814515.

It is a self number, because there is not a number n which added to its sum of digits gives 515418672.

It is not an unprimeable number, because it can be changed into a prime (515418671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446448 + ... + 447600.

It is an arithmetic number, because the mean of its divisors is an integer number (17028424).

Almost surely, 2^515418672 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 515418672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681136960).

515418672 is an abundant number, since it is smaller than the sum of its proper divisors (846855248).

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

515418672 is a wasteful number, since it uses less digits than its factorization.

515418672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1364 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 515418672 is about 22702.8340081145. The cubic root of 515418672 is about 801.7766099839.

The spelling of 515418672 in words is "five hundred fifteen million, four hundred eighteen thousand, six hundred seventy-two".