30974320 has 120 divisors (see below), whose sum is σ = 81691200. Its totient is φ = 10902528.

The previous prime is 30974309. The next prime is 30974327. The reversal of 30974320 is 2347903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30974327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392041 + ... + 392119.

It is an arithmetic number, because the mean of its divisors is an integer number (680760).

Almost surely, 2^30974320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30974320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40845600).

30974320 is an abundant number, since it is smaller than the sum of its proper divisors (50716880).

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

30974320 is a wasteful number, since it uses less digits than its factorization.

30974320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30974320 is about 5565.4577529616. The cubic root of 30974320 is about 314.0512986360.

The spelling of 30974320 in words is "thirty million, nine hundred seventy-four thousand, three hundred twenty".