76828 has 6 divisors (see below), whose sum is σ = 134456. Its totient is φ = 38412.

The previous prime is 76819. The next prime is 76829. The reversal of 76828 is 82867.

It is a self number, because there is not a number n which added to its sum of digits gives 76828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76829) by changing a digit.

76828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9600 + ... + 9607.

2⁷⁶⁸²⁸ is an apocalyptic number.

It is an amenable number.

76828 is a deficient number, since it is larger than the sum of its proper divisors (57628).

76828 is a wasteful number, since it uses less digits than its factorization.

76828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211 (or 19209 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 76828 is about 277.1786427559. The cubic root of 76828 is about 42.5115078410.

The spelling of 76828 in words is "seventy-six thousand, eight hundred twenty-eight".