30470868 has 36 divisors (see below), whose sum is σ = 81556020. Its totient is φ = 9559296.

The previous prime is 30470849. The next prime is 30470873. The reversal of 30470868 is 86807403.

It can be written as a sum of positive squares in 2 ways, for example, as 14884164 + 15586704 = 3858^2 + 3948^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24283 + ... + 25506.

It is an arithmetic number, because the mean of its divisors is an integer number (2265445).

Almost surely, 2^30470868 is an apocalyptic number.

It is an amenable number.

30470868 is an abundant number, since it is smaller than the sum of its proper divisors (51085152).

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

30470868 is a wasteful number, since it uses less digits than its factorization.

30470868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49816 (or 49811 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 30470868 is about 5520.0423911416. The cubic root of 30470868 is about 312.3404813594.

The spelling of 30470868 in words is "thirty million, four hundred seventy thousand, eight hundred sixty-eight".