30855232 has 28 divisors (see below), whose sum is σ = 61927740. Its totient is φ = 15251456.

The previous prime is 30855229. The next prime is 30855257. The reversal of 30855232 is 23255803.

It can be written as a sum of positive squares in 2 ways, for example, as 4064256 + 26790976 = 2016^2 + 5176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30855232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988 + ... + 8404.

It is an arithmetic number, because the mean of its divisors is an integer number (2211705).

Almost surely, 2^30855232 is an apocalyptic number.

30855232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30855232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30963870).

30855232 is an abundant number, since it is smaller than the sum of its proper divisors (31072508).

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

30855232 is an equidigital number, since it uses as much as digits as its factorization.

30855232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 30855232 is about 5554.7485991717. The cubic root of 30855232 is about 313.6483005571.

The spelling of 30855232 in words is "thirty million, eight hundred fifty-five thousand, two hundred thirty-two".