1256288 has 48 divisors (see below), whose sum is σ = 2794176. Its totient is φ = 551040.

The previous prime is 1256279. The next prime is 1256303. The reversal of 1256288 is 8826521.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15095 + ... + 15177.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2^1256288 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 1256288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397088).

1256288 is an abundant number, since it is smaller than the sum of its proper divisors (1537888).

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

1256288 is a wasteful number, since it uses less digits than its factorization.

1256288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 139 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 1256288 is about 1120.8425402348. The cubic root of 1256288 is about 107.9020602729.

The spelling of 1256288 in words is "one million, two hundred fifty-six thousand, two hundred eighty-eight".