30828404 has 12 divisors (see below), whose sum is σ = 54968004. Its totient is φ = 15123264.

The previous prime is 30828403. The next prime is 30828409. The reversal of 30828404 is 40482803.

It can be written as a sum of positive squares in 2 ways, for example, as 27772900 + 3055504 = 5270^2 + 1748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30828401) 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, 72497 + ... + 72920.

It is an arithmetic number, because the mean of its divisors is an integer number (4580667).

Almost surely, 2^30828404 is an apocalyptic number.

It is an amenable number.

30828404 is a deficient number, since it is larger than the sum of its proper divisors (24139600).

30828404 is a wasteful number, since it uses less digits than its factorization.

30828404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145474 (or 145472 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 30828404 is about 5552.3332032579. Note that the first 3 decimals coincide. The cubic root of 30828404 is about 313.5573705807.

The spelling of 30828404 in words is "thirty million, eight hundred twenty-eight thousand, four hundred four".