1229256 has 80 divisors (see below), whose sum is σ = 3949440. Its totient is φ = 349920.

The previous prime is 1229237. The next prime is 1229257. The reversal of 1229256 is 6529221.

It is a super-2 number, since 2×1229256² = 3022140627072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4401 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (49368).

2^1229256 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 1229256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1974720).

1229256 is an abundant number, since it is smaller than the sum of its proper divisors (2720184).

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

1229256 is a wasteful number, since it uses less digits than its factorization.

1229256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 283 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1229256 is about 1108.7181787993. The cubic root of 1229256 is about 107.1225195684.

It can be divided in two parts, 1229 and 256, that added together give a triangular number (1485 = T₅₄).

The spelling of 1229256 in words is "one million, two hundred twenty-nine thousand, two hundred fifty-six".