1428804 has 72 divisors (see below), whose sum is σ = 4036032. Its totient is φ = 423360.

The previous prime is 1428793. The next prime is 1428811. The reversal of 1428804 is 4088241.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20089 + ... + 20159.

It is an arithmetic number, because the mean of its divisors is an integer number (56056).

2^1428804 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 1428804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2018016).

1428804 is an abundant number, since it is smaller than the sum of its proper divisors (2607228).

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

1428804 is a wasteful number, since it uses less digits than its factorization.

1428804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1428804 is about 1195.3258969837. The cubic root of 1428804 is about 112.6308994846.

It can be divided in two parts, 142880 and 4, that added together give a square (142884 = 378²).

The spelling of 1428804 in words is "one million, four hundred twenty-eight thousand, eight hundred four".