30828784 has 40 divisors (see below), whose sum is σ = 68532320. Its totient is φ = 13160448.

The previous prime is 30828781. The next prime is 30828793. The reversal of 30828784 is 48782803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30828781) 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, 45472 + ... + 46144.

It is an arithmetic number, because the mean of its divisors is an integer number (1713308).

Almost surely, 2^30828784 is an apocalyptic number.

It is an amenable number.

30828784 is an abundant number, since it is smaller than the sum of its proper divisors (37703536).

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

30828784 is a wasteful number, since it uses less digits than its factorization.

30828784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 30828784 is about 5552.3674230008. The cubic root of 30828784 is about 313.5586589089.

It can be divided in two parts, 308 and 28784, that added together give a palindrome (29092).

The spelling of 30828784 in words is "thirty million, eight hundred twenty-eight thousand, seven hundred eighty-four".