515672988 has 12 divisors (see below), whose sum is σ = 1203237000. Its totient is φ = 171890992.

The previous prime is 515672981. The next prime is 515672999. The reversal of 515672988 is 889276515.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 515672988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515672981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21486363 + ... + 21486386.

It is an arithmetic number, because the mean of its divisors is an integer number (100269750).

Almost surely, 2^515672988 is an apocalyptic number.

It is an amenable number.

515672988 is an abundant number, since it is smaller than the sum of its proper divisors (687564012).

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

515672988 is a wasteful number, since it uses less digits than its factorization.

515672988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42972756 (or 42972754 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 51.

The square root of 515672988 is about 22708.4342921303. The cubic root of 515672988 is about 801.9084581972.

The spelling of 515672988 in words is "five hundred fifteen million, six hundred seventy-two thousand, nine hundred eighty-eight".