828147 has 4 divisors (see below), whose sum is σ = 1104200. Its totient is φ = 552096.

The previous prime is 828133. The next prime is 828169. The reversal of 828147 is 741828.

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

It is not a de Polignac number, because 828147 - 2⁴ = 828131 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (828127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138022 + ... + 138027.

It is an arithmetic number, because the mean of its divisors is an integer number (276050).

2⁸²⁸¹⁴⁷ is an apocalyptic number.

828147 is a deficient number, since it is larger than the sum of its proper divisors (276053).

828147 is a wasteful number, since it uses less digits than its factorization.

828147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276052.

The product of its digits is 3584, while the sum is 30.

The square root of 828147 is about 910.0258238094. The cubic root of 828147 is about 93.9079754284.

The spelling of 828147 in words is "eight hundred twenty-eight thousand, one hundred forty-seven".