1428791 has 12 divisors (see below), whose sum is σ = 1790712. Its totient is φ = 1129968.

The previous prime is 1428787. The next prime is 1428793. The reversal of 1428791 is 1978241.

It is not a de Polignac number, because 1428791 - 2² = 1428787 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 485 + ... + 1758.

It is an arithmetic number, because the mean of its divisors is an integer number (149226).

2^1428791 is an apocalyptic number.

1428791 is a deficient number, since it is larger than the sum of its proper divisors (361921).

1428791 is a wasteful number, since it uses less digits than its factorization.

1428791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270 (or 2263 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 1428791 is about 1195.3204591238. The cubic root of 1428791 is about 112.6305578921.

The spelling of 1428791 in words is "one million, four hundred twenty-eight thousand, seven hundred ninety-one".