30873906 has 32 divisors (see below), whose sum is σ = 78410880. Its totient is φ = 8821008.

The previous prime is 30873901. The next prime is 30873919. The reversal of 30873906 is 60937803.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30873901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40461 + ... + 41216.

It is an arithmetic number, because the mean of its divisors is an integer number (2450340).

Almost surely, 2^30873906 is an apocalyptic number.

30873906 is an abundant number, since it is smaller than the sum of its proper divisors (47536974).

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

30873906 is a wasteful number, since it uses less digits than its factorization.

30873906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81695 (or 81689 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30873906 is about 5556.4292490771. The cubic root of 30873906 is about 313.7115625150.

The spelling of 30873906 in words is "thirty million, eight hundred seventy-three thousand, nine hundred six".