915630240 has 192 divisors, whose sum is σ = 3342318336. Its totient is φ = 206364672.

The previous prime is 915630227. The next prime is 915630323. The reversal of 915630240 is 42036519.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 915630198 and 915630207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243414 + ... + 247146.

It is an arithmetic number, because the mean of its divisors is an integer number (17407908).

Almost surely, 2^915630240 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 915630240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671159168).

915630240 is an abundant number, since it is smaller than the sum of its proper divisors (2426688096).

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

915630240 is a wasteful number, since it uses less digits than its factorization.

915630240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 915630240 is about 30259.3826771136. The cubic root of 915630240 is about 971.0465340717.

Adding to 915630240 its reverse (42036519), we get a palindrome (957666759).

The spelling of 915630240 in words is "nine hundred fifteen million, six hundred thirty thousand, two hundred forty".