1280512 has 40 divisors (see below), whose sum is σ = 2663892. Its totient is φ = 614400.

The previous prime is 1280473. The next prime is 1280519. The reversal of 1280512 is 2150821.

It can be written as a sum of positive squares in 2 ways, for example, as 891136 + 389376 = 944^2 + 624^2 .

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1280512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20962 + ... + 21022.

2^1280512 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 1280512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331946).

1280512 is an abundant number, since it is smaller than the sum of its proper divisors (1383380).

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

1280512 is an frugal number, since it uses more digits than its factorization.

1280512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1280512 is about 1131.5971014456. The cubic root of 1280512 is about 108.5911796279.

The spelling of 1280512 in words is "one million, two hundred eighty thousand, five hundred twelve".