1065287440 has 120 divisors (see below), whose sum is σ = 3033020160. Its totient is φ = 345993984.

The previous prime is 1065287437. The next prime is 1065287513. The reversal of 1065287440 is 447825601.

It is a super-2 number, since 2×1065287440² = 2269674659643507200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065287440.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67329 + ... + 81631.

It is an arithmetic number, because the mean of its divisors is an integer number (25275168).

Almost surely, 2^1065287440 is an apocalyptic number.

1065287440 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 1065287440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516510080).

1065287440 is an abundant number, since it is smaller than the sum of its proper divisors (1967732720).

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

1065287440 is a wasteful number, since it uses less digits than its factorization.

1065287440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14349 (or 14336 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 1065287440 is about 32638.7413973027. The cubic root of 1065287440 is about 1021.3053389120.

The spelling of 1065287440 in words is "one billion, sixty-five million, two hundred eighty-seven thousand, four hundred forty".