30828040 has 32 divisors (see below), whose sum is σ = 70404480. Its totient is φ = 12146112.

The previous prime is 30828001. The next prime is 30828041. The reversal of 30828040 is 4082803.

It is a junction number, because it is equal to n+sod(n) for n = 30827996 and 30828014.

It is not an unprimeable number, because it can be changed into a prime (30828041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072 + ... + 8431.

It is an arithmetic number, because the mean of its divisors is an integer number (2200140).

Almost surely, 2^30828040 is an apocalyptic number.

It is an amenable number.

30828040 is an abundant number, since it is smaller than the sum of its proper divisors (39576440).

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

30828040 is a wasteful number, since it uses less digits than its factorization.

30828040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11581 (or 11577 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 30828040 is about 5552.3004241485. The cubic root of 30828040 is about 313.5561364879.

The spelling of 30828040 in words is "thirty million, eight hundred twenty-eight thousand, forty".