30470872 has 16 divisors (see below), whose sum is σ = 58527000. Its totient is φ = 14863680.

The previous prime is 30470849. The next prime is 30470873. The reversal of 30470872 is 27807403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30470873) 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 3 ways as a sum of consecutive naturals, for example, 46122 + ... + 46777.

Almost surely, 2^30470872 is an apocalyptic number.

It is an amenable number.

30470872 is a deficient number, since it is larger than the sum of its proper divisors (28056128).

30470872 is a wasteful number, since it uses less digits than its factorization.

30470872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92946 (or 92942 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 30470872 is about 5520.0427534576. The cubic root of 30470872 is about 312.3404950266.

The spelling of 30470872 in words is "thirty million, four hundred seventy thousand, eight hundred seventy-two".