1298256 has 80 divisors (see below), whose sum is σ = 3731904. Its totient is φ = 387072.

The previous prime is 1298221. The next prime is 1298261. The reversal of 1298256 is 6528921.

Its product of digits (8640) is a multiple of the sum of its prime factors (108).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30171 + ... + 30213.

2^1298256 is an apocalyptic number.

1298256 is a gapful number since it is divisible by the number (16) 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 1298256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865952).

1298256 is an abundant number, since it is smaller than the sum of its proper divisors (2433648).

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

1298256 is a wasteful number, since it uses less digits than its factorization.

1298256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 102 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 1298256 is about 1139.4103738338. The cubic root of 1298256 is about 109.0904616143.

It can be divided in two parts, 129 and 8256, that multiplied together give a square (1065024 = 1032²).

The spelling of 1298256 in words is "one million, two hundred ninety-eight thousand, two hundred fifty-six".