1275264 has 96 divisors (see below), whose sum is σ = 3898440. Its totient is φ = 414720.

The previous prime is 1275227. The next prime is 1275269. The reversal of 1275264 is 4625721.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3360) is a multiple of the sum of its prime factors (70).

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31084 + ... + 31124.

2^1275264 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 1275264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1949220).

1275264 is an abundant number, since it is smaller than the sum of its proper divisors (2623176).

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

1275264 is an frugal number, since it uses more digits than its factorization.

1275264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 46 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 1275264 is about 1129.2758741778. The cubic root of 1275264 is about 108.4426278971.

The spelling of 1275264 in words is "one million, two hundred seventy-five thousand, two hundred sixty-four".