1428856 has 32 divisors (see below), whose sum is σ = 3150000. Its totient is φ = 599040.

The previous prime is 1428853. The next prime is 1428863. The reversal of 1428856 is 6588241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520 + ... + 1768.

2^1428856 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 1428856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1575000).

1428856 is an abundant number, since it is smaller than the sum of its proper divisors (1721144).

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

1428856 is a wasteful number, since it uses less digits than its factorization.

1428856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279 (or 1275 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 1428856 is about 1195.3476481760. The cubic root of 1428856 is about 112.6322658338.

It can be divided in two parts, 142 and 8856, that added together give a palindrome (8998).

The spelling of 1428856 in words is "one million, four hundred twenty-eight thousand, eight hundred fifty-six".