828987 has 8 divisors (see below), whose sum is σ = 1113936. Its totient is φ = 548352.

The previous prime is 828977. The next prime is 829001. The reversal of 828987 is 789828.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 828987 - 2⁶ = 828923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (828917) 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 7 ways as a sum of consecutive naturals, for example, 598 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (139242).

2⁸²⁸⁹⁸⁷ is an apocalyptic number.

828987 is a deficient number, since it is larger than the sum of its proper divisors (284949).

828987 is a wasteful number, since it uses less digits than its factorization.

828987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157.

The product of its digits is 64512, while the sum is 42.

The square root of 828987 is about 910.4872322004. The cubic root of 828987 is about 93.9397153827.

The spelling of 828987 in words is "eight hundred twenty-eight thousand, nine hundred eighty-seven".