331680828 has 24 divisors (see below), whose sum is σ = 775256832. Its totient is φ = 110369584.

The previous prime is 331680821. The next prime is 331680841. The reversal of 331680828 is 828086133.

It is a super-2 number, since 2×331680828² = 220024343325531168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331680821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16500 + ... + 30587.

It is an arithmetic number, because the mean of its divisors is an integer number (32302368).

Almost surely, 2^331680828 is an apocalyptic number.

It is an amenable number.

331680828 is an abundant number, since it is smaller than the sum of its proper divisors (443576004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331680828 is a wasteful number, since it uses less digits than its factorization.

331680828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47681 (or 47679 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 331680828 is about 18212.1066326771. The cubic root of 331680828 is about 692.2135925019.

It can be divided in two parts, 33 and 1680828, that added together give a palindrome (1680861).

The spelling of 331680828 in words is "three hundred thirty-one million, six hundred eighty thousand, eight hundred twenty-eight".