1428336 has 120 divisors (see below), whose sum is σ = 4964960. Its totient is φ = 373248.

The previous prime is 1428281. The next prime is 1428359. The reversal of 1428336 is 6338241.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

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 23 ways as a sum of consecutive naturals, for example, 13050 + ... + 13158.

2^1428336 is an apocalyptic number.

1428336 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 1428336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2482480).

1428336 is an abundant number, since it is smaller than the sum of its proper divisors (3536624).

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

1428336 is a wasteful number, since it uses less digits than its factorization.

1428336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 134 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1428336 is about 1195.1301184390. The cubic root of 1428336 is about 112.6186008494.

It can be divided in two parts, 1428 and 336, that added together give a square (1764 = 42²).

The spelling of 1428336 in words is "one million, four hundred twenty-eight thousand, three hundred thirty-six".