30868180 has 48 divisors (see below), whose sum is σ = 76648320. Its totient is φ = 10217088.

The previous prime is 30868171. The next prime is 30868183. The reversal of 30868180 is 8186803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30868183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (1596840).

Almost surely, 2^30868180 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 30868180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38324160).

30868180 is an abundant number, since it is smaller than the sum of its proper divisors (45780140).

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

30868180 is a wasteful number, since it uses less digits than its factorization.

30868180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7648 (or 7646 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 30868180 is about 5555.9139662165. The cubic root of 30868180 is about 313.6921672424.

The spelling of 30868180 in words is "thirty million, eight hundred sixty-eight thousand, one hundred eighty".