30129828 has 24 divisors (see below), whose sum is σ = 70394688. Its totient is φ = 10030176.

The previous prime is 30129823. The next prime is 30129829. The reversal of 30129828 is 82892103.

It is not an unprimeable number, because it can be changed into a prime (30129823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13650 + ... + 15702.

It is an arithmetic number, because the mean of its divisors is an integer number (2933112).

Almost surely, 2^30129828 is an apocalyptic number.

It is an amenable number.

30129828 is an abundant number, since it is smaller than the sum of its proper divisors (40264860).

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

30129828 is a wasteful number, since it uses less digits than its factorization.

30129828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 30129828 is about 5489.0644011525. The cubic root of 30129828 is about 311.1708342071.

The spelling of 30129828 in words is "thirty million, one hundred twenty-nine thousand, eight hundred twenty-eight".