1428797 has 4 divisors (see below), whose sum is σ = 1432860. Its totient is φ = 1424736.

The previous prime is 1428793. The next prime is 1428811. The reversal of 1428797 is 7978241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 1229881 = 446^2 + 1109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428797 - 2² = 1428793 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448 + ... + 2225.

It is an arithmetic number, because the mean of its divisors is an integer number (358215).

2^1428797 is an apocalyptic number.

It is an amenable number.

1428797 is a deficient number, since it is larger than the sum of its proper divisors (4063).

1428797 is an equidigital number, since it uses as much as digits as its factorization.

1428797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062.

The product of its digits is 28224, while the sum is 38.

The square root of 1428797 is about 1195.3229689084. The cubic root of 1428797 is about 112.6307155504.

The spelling of 1428797 in words is "one million, four hundred twenty-eight thousand, seven hundred ninety-seven".