30828144 has 20 divisors (see below), whose sum is σ = 79639496. Its totient is φ = 10276032.

The previous prime is 30828121. The next prime is 30828163. The reversal of 30828144 is 44182803.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 321079 + ... + 321174.

Almost surely, 2^30828144 is an apocalyptic number.

It is an amenable number.

30828144 is an abundant number, since it is smaller than the sum of its proper divisors (48811352).

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

30828144 is a wasteful number, since it uses less digits than its factorization.

30828144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642264 (or 642258 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 30828144 is about 5552.3097896281. The cubic root of 30828144 is about 313.5564890869.

The spelling of 30828144 in words is "thirty million, eight hundred twenty-eight thousand, one hundred forty-four".