1256480 has 24 divisors (see below), whose sum is σ = 2968812. Its totient is φ = 502528.

The previous prime is 1256477. The next prime is 1256531. The reversal of 1256480 is 846521.

It can be written as a sum of positive squares in 2 ways, for example, as 1073296 + 183184 = 1036^2 + 428^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767 + ... + 4086.

2^1256480 is an apocalyptic number.

1256480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1256480 is an abundant number, since it is smaller than the sum of its proper divisors (1712332).

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

1256480 is an equidigital number, since it uses as much as digits as its factorization.

1256480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7868 (or 7860 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1256480 is about 1120.9281868166. The cubic root of 1256480 is about 107.9075569266.

It can be divided in two parts, 125 and 6480, that multiplied together give a 4-th power (810000 = 30⁴).

The spelling of 1256480 in words is "one million, two hundred fifty-six thousand, four hundred eighty".