308828 has 12 divisors (see below), whose sum is σ = 582120. Its totient is φ = 142512.

The previous prime is 308827. The next prime is 308849. The reversal of 308828 is 828803.

308828 is nontrivially palindromic in base 7.

308828 is an undulating number in base 7.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 308828.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308828.

It is not an unprimeable number, because it can be changed into a prime (308827) 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, 2918 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2³⁰⁸⁸²⁸ is an apocalyptic number.

It is an amenable number.

308828 is a deficient number, since it is larger than the sum of its proper divisors (273292).

308828 is a wasteful number, since it uses less digits than its factorization.

308828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956 (or 5954 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 308828 is about 555.7229525582. The cubic root of 308828 is about 67.5935967232.

The spelling of 308828 in words is "three hundred eight thousand, eight hundred twenty-eight".