828143 has 4 divisors (see below), whose sum is σ = 830280. Its totient is φ = 826008.

The previous prime is 828133. The next prime is 828169. The reversal of 828143 is 341828.

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 828143 - 2⁴ = 828127 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828133) 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, 305 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (207570).

2⁸²⁸¹⁴³ is an apocalyptic number.

828143 is a deficient number, since it is larger than the sum of its proper divisors (2137).

828143 is a wasteful number, since it uses less digits than its factorization.

828143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its digits is 1536, while the sum is 26.

The square root of 828143 is about 910.0236260669. The cubic root of 828143 is about 93.9078242344.

The spelling of 828143 in words is "eight hundred twenty-eight thousand, one hundred forty-three".