30405828 has 24 divisors (see below), whose sum is σ = 71344000. Its totient is φ = 10078560.

The previous prime is 30405797. The next prime is 30405901. The reversal of 30405828 is 82850403.

It is a super-3 number, since 3×30405828³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30405795 and 30405804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4828 + ... + 9171.

Almost surely, 2^30405828 is an apocalyptic number.

It is an amenable number.

30405828 is an abundant number, since it is smaller than the sum of its proper divisors (40938172).

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

30405828 is a wasteful number, since it uses less digits than its factorization.

30405828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14187 (or 14185 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 30405828 is about 5514.1479849565. The cubic root of 30405828 is about 312.1180930341.

The spelling of 30405828 in words is "thirty million, four hundred five thousand, eight hundred twenty-eight".