30980718 has 60 divisors (see below), whose sum is σ = 72091800. Its totient is φ = 9943560.

The previous prime is 30980693. The next prime is 30980759. The reversal of 30980718 is 81708903.

It is a super-3 number, since 3×30980718³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 155583 + ... + 155781.

It is an arithmetic number, because the mean of its divisors is an integer number (1201530).

Almost surely, 2^30980718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30980718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36045900).

30980718 is an abundant number, since it is smaller than the sum of its proper divisors (41111082).

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

30980718 is a wasteful number, since it uses less digits than its factorization.

30980718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 30980718 is about 5566.0325187695. The cubic root of 30980718 is about 314.0729204384.

The spelling of 30980718 in words is "thirty million, nine hundred eighty thousand, seven hundred eighteen".