868828 has 6 divisors (see below), whose sum is σ = 1520456. Its totient is φ = 434412.

The previous prime is 868817. The next prime is 868841. The reversal of 868828 is 828868.

868828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13 and base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108600 + ... + 108607.

2⁸⁶⁸⁸²⁸ is an apocalyptic number.

It is an amenable number.

868828 is a deficient number, since it is larger than the sum of its proper divisors (651628).

868828 is a wasteful number, since it uses less digits than its factorization.

868828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217211 (or 217209 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 868828 is about 932.1094356351. The cubic root of 868828 is about 95.4211404584.

Adding to 868828 its sum of digits (40), we get a palindrome (868868).

The spelling of 868828 in words is "eight hundred sixty-eight thousand, eight hundred twenty-eight".