30987166 has 16 divisors (see below), whose sum is σ = 54835200. Its totient is φ = 12851640.

The previous prime is 30987161. The next prime is 30987179. The reversal of 30987166 is 66178903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30987161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35266 + ... + 36133.

It is an arithmetic number, because the mean of its divisors is an integer number (3427200).

Almost surely, 2^30987166 is an apocalyptic number.

30987166 is a deficient number, since it is larger than the sum of its proper divisors (23848034).

30987166 is a wasteful number, since it uses less digits than its factorization.

30987166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71439.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 30987166 is about 5566.6117162956. The cubic root of 30987166 is about 314.0947082023.

The spelling of 30987166 in words is "thirty million, nine hundred eighty-seven thousand, one hundred sixty-six".