30255828 has 24 divisors (see below), whose sum is σ = 74313120. Its totient is φ = 9554400.

The previous prime is 30255821. The next prime is 30255871. The reversal of 30255828 is 82855203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30255821) 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, 66123 + ... + 66578.

It is an arithmetic number, because the mean of its divisors is an integer number (3096380).

Almost surely, 2^30255828 is an apocalyptic number.

30255828 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30255828 is an abundant number, since it is smaller than the sum of its proper divisors (44057292).

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

30255828 is a wasteful number, since it uses less digits than its factorization.

30255828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132727 (or 132725 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 30255828 is about 5500.5297926654. The cubic root of 30255828 is about 311.6039929772.

The spelling of 30255828 in words is "thirty million, two hundred fifty-five thousand, eight hundred twenty-eight".