1015240 has 32 divisors (see below), whose sum is σ = 2420280. Its totient is φ = 381952.

The previous prime is 1015207. The next prime is 1015277. The reversal of 1015240 is 425101.

It can be written as a sum of positive squares in 4 ways, for example, as 1004004 + 11236 = 1002^2 + 106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1015240.

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 7 ways as a sum of consecutive naturals, for example, 67 + ... + 1426.

2^1015240 is an apocalyptic number.

1015240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1015240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210140).

1015240 is an abundant number, since it is smaller than the sum of its proper divisors (1405040).

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

1015240 is a wasteful number, since it uses less digits than its factorization.

1015240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1015240 is about 1007.5911869404. The cubic root of 1015240 is about 100.5054409899.

The spelling of 1015240 in words is "one million, fifteen thousand, two hundred forty".