1256280 has 96 divisors (see below), whose sum is σ = 4114800. Its totient is φ = 306432.

The previous prime is 1256279. The next prime is 1256303. The reversal of 1256280 is 826521.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1256280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43306 + ... + 43334.

2^1256280 is an apocalyptic number.

1256280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1256280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057400).

1256280 is an abundant number, since it is smaller than the sum of its proper divisors (2858520).

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

1256280 is a wasteful number, since it uses less digits than its factorization.

1256280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1256280 is about 1120.8389714852. The cubic root of 1256280 is about 107.9018312335.

Subtracting from 1256280 its product of nonzero digits (960), we obtain a triangular number (1255320 = T₁₅₈₄).

The spelling of 1256280 in words is "one million, two hundred fifty-six thousand, two hundred eighty".