515038972 has 24 divisors (see below), whose sum is σ = 1051997184. Its totient is φ = 216034032.

The previous prime is 515038957. The next prime is 515038981. The reversal of 515038972 is 279830515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194368 + ... + 196999.

It is an arithmetic number, because the mean of its divisors is an integer number (43833216).

Almost surely, 2^515038972 is an apocalyptic number.

It is an amenable number.

515038972 is an abundant number, since it is smaller than the sum of its proper divisors (536958212).

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

515038972 is a wasteful number, since it uses less digits than its factorization.

515038972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391425 (or 391423 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 515038972 is about 22694.4700753289. The cubic root of 515038972 is about 801.5796766407.

The spelling of 515038972 in words is "five hundred fifteen million, thirty-eight thousand, nine hundred seventy-two".