1305264 has 40 divisors (see below), whose sum is σ = 3428352. Its totient is φ = 427840.

The previous prime is 1305253. The next prime is 1305287. The reversal of 1305264 is 4625031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305264.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3217 + ... + 3599.

2^1305264 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 1305264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714176).

1305264 is an abundant number, since it is smaller than the sum of its proper divisors (2123088).

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

1305264 is a wasteful number, since it uses less digits than its factorization.

1305264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1305264 is about 1142.4815096972. The cubic root of 1305264 is about 109.2863999762.

The spelling of 1305264 in words is "one million, three hundred five thousand, two hundred sixty-four".