30963906 has 12 divisors (see below), whose sum is σ = 67088502. Its totient is φ = 10321296.

The previous prime is 30963887. The next prime is 30963937. The reversal of 30963906 is 60936903.

It can be written as a sum of positive squares in only one way, i.e., 26101881 + 4862025 = 5109^2 + 2205^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860091 + ... + 860126.

Almost surely, 2^30963906 is an apocalyptic number.

30963906 is an abundant number, since it is smaller than the sum of its proper divisors (36124596).

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

30963906 is a wasteful number, since it uses less digits than its factorization.

30963906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720225 (or 1720222 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 30963906 is about 5564.5220819042. The cubic root of 30963906 is about 314.0160985431.

The spelling of 30963906 in words is "thirty million, nine hundred sixty-three thousand, nine hundred six".