915140 has 12 divisors (see below), whose sum is σ = 1921836. Its totient is φ = 366048.

The previous prime is 915139. The next prime is 915143. The reversal of 915140 is 41519.

It can be written as a sum of positive squares in 2 ways, for example, as 246016 + 669124 = 496^2 + 818^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 45757 = 915140 / (9 + 1 + 5 + 1 + 4 + 0).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 915140.

It is not an unprimeable number, because it can be changed into a prime (915143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22859 + ... + 22898.

It is an arithmetic number, because the mean of its divisors is an integer number (160153).

2⁹¹⁵¹⁴⁰ is an apocalyptic number.

It is an amenable number.

915140 is an abundant number, since it is smaller than the sum of its proper divisors (1006696).

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

915140 is a wasteful number, since it uses less digits than its factorization.

915140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45766 (or 45764 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 915140 is about 956.6294998587. The cubic root of 915140 is about 97.0873199605.

Adding to 915140 its reverse (41519), we get a palindrome (956659).

The spelling of 915140 in words is "nine hundred fifteen thousand, one hundred forty".