1275824 has 30 divisors (see below), whose sum is σ = 2721180. Its totient is φ = 579040.

The previous prime is 1275823. The next prime is 1275829. The reversal of 1275824 is 4285721.

It is not an unprimeable number, because it can be changed into a prime (1275823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1607 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (90706).

2^1275824 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 1275824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360590).

1275824 is an abundant number, since it is smaller than the sum of its proper divisors (1445356).

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

1275824 is a wasteful number, since it uses less digits than its factorization.

1275824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 672 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 1275824 is about 1129.5237934634. The cubic root of 1275824 is about 108.4584988553.

The spelling of 1275824 in words is "one million, two hundred seventy-five thousand, eight hundred twenty-four".