1428383 has 4 divisors (see below), whose sum is σ = 1558248. Its totient is φ = 1298520.

The previous prime is 1428359. The next prime is 1428389. The reversal of 1428383 is 3838241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1428383 - 2⁸ = 1428127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64916 + ... + 64937.

It is an arithmetic number, because the mean of its divisors is an integer number (389562).

2^1428383 is an apocalyptic number.

1428383 is a deficient number, since it is larger than the sum of its proper divisors (129865).

1428383 is a wasteful number, since it uses less digits than its factorization.

1428383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129864.

The product of its digits is 4608, while the sum is 29.

The square root of 1428383 is about 1195.1497814082. The cubic root of 1428383 is about 112.6198360901.

The spelling of 1428383 in words is "one million, four hundred twenty-eight thousand, three hundred eighty-three".