515200040 has 16 divisors (see below), whose sum is σ = 1159200180. Its totient is φ = 206080000.

The previous prime is 515200033. The next prime is 515200057. The reversal of 515200040 is 40002515.

It can be written as a sum of positive squares in 2 ways, for example, as 499343716 + 15856324 = 22346^2 + 3982^2 .

It is a junction number, because it is equal to n+sod(n) for n = 515199991 and 515200018.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6439961 + ... + 6440040.

Almost surely, 2^515200040 is an apocalyptic number.

It is an amenable number.

515200040 is an abundant number, since it is smaller than the sum of its proper divisors (644000140).

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

515200040 is a wasteful number, since it uses less digits than its factorization.

515200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880012 (or 12880008 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 515200040 is about 22698.0184157120. The cubic root of 515200040 is about 801.6632271977.

Adding to 515200040 its reverse (40002515), we get a palindrome (555202555).

The spelling of 515200040 in words is "five hundred fifteen million, two hundred thousand, forty".