1229856 has 48 divisors (see below), whose sum is σ = 3374784. Its totient is φ = 391424.

The previous prime is 1229827. The next prime is 1229869. The reversal of 1229856 is 6589221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a zygodrome in base 11.

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, 1930 + ... + 2486.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2^1229856 is an apocalyptic number.

1229856 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 1229856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687392).

1229856 is an abundant number, since it is smaller than the sum of its proper divisors (2144928).

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

1229856 is a wasteful number, since it uses less digits than its factorization.

1229856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 585 counting only the distinct ones).

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

The square root of 1229856 is about 1108.9887285270. The cubic root of 1229856 is about 107.1399455717.

The spelling of 1229856 in words is "one million, two hundred twenty-nine thousand, eight hundred fifty-six".