30856700 has 72 divisors (see below), whose sum is σ = 81057312. Its totient is φ = 9953280.

The previous prime is 30856697. The next prime is 30856747. The reversal of 30856700 is 765803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10604 + ... + 13196.

It is an arithmetic number, because the mean of its divisors is an integer number (1125796).

Almost surely, 2^30856700 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 30856700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40528656).

30856700 is an abundant number, since it is smaller than the sum of its proper divisors (50200612).

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

30856700 is a wasteful number, since it uses less digits than its factorization.

30856700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631 (or 2624 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 30856700 is about 5554.8807367935. The cubic root of 30856700 is about 313.6532746287.

The spelling of 30856700 in words is "thirty million, eight hundred fifty-six thousand, seven hundred".