915040 has 96 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 290304.

The previous prime is 915029. The next prime is 915041. The reversal of 915040 is 40519.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 914999 and 915017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21259 + ... + 21301.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2⁹¹⁵⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 915040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330560).

915040 is an abundant number, since it is smaller than the sum of its proper divisors (1746080).

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

915040 is a wasteful number, since it uses less digits than its factorization.

915040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 915040 is about 956.5772315919. The cubic root of 915040 is about 97.0837834941.

Adding to 915040 its reverse (40519), we get a palindrome (955559).

The spelling of 915040 in words is "nine hundred fifteen thousand, forty".