515340140 has 24 divisors (see below), whose sum is σ = 1236816672. Its totient is φ = 176688000.

The previous prime is 515340131. The next prime is 515340143. The reversal of 515340140 is 41043515.

It is not an unprimeable number, because it can be changed into a prime (515340143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1840361 + ... + 1840640.

It is an arithmetic number, because the mean of its divisors is an integer number (51534028).

Almost surely, 2^515340140 is an apocalyptic number.

It is an amenable number.

515340140 is an abundant number, since it is smaller than the sum of its proper divisors (721476532).

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

515340140 is a wasteful number, since it uses less digits than its factorization.

515340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681017 (or 3681015 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 515340140 is about 22701.1043784218. The cubic root of 515340140 is about 801.7358868965.

Adding to 515340140 its reverse (41043515), we get a palindrome (556383655).

The spelling of 515340140 in words is "five hundred fifteen million, three hundred forty thousand, one hundred forty".