30881200 has 120 divisors (see below), whose sum is σ = 87181920. Its totient is φ = 10291200.

The previous prime is 30881173. The next prime is 30881261. The reversal of 30881200 is 218803.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114666 + ... + 114934.

It is an arithmetic number, because the mean of its divisors is an integer number (726516).

Almost surely, 2^30881200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30881200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43590960).

30881200 is an abundant number, since it is smaller than the sum of its proper divisors (56300720).

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

30881200 is a wasteful number, since it uses less digits than its factorization.

30881200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 30881200 is about 5557.0855670936. The cubic root of 30881200 is about 313.7362654898.

The spelling of 30881200 in words is "thirty million, eight hundred eighty-one thousand, two hundred".