30389216 has 96 divisors (see below), whose sum is σ = 73029600. Its totient is φ = 12257280.

The previous prime is 30389209. The next prime is 30389221. The reversal of 30389216 is 61298303.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132590 + ... + 132818.

It is an arithmetic number, because the mean of its divisors is an integer number (760725).

Almost surely, 2^30389216 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 30389216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36514800).

30389216 is an abundant number, since it is smaller than the sum of its proper divisors (42640384).

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

30389216 is a wasteful number, since it uses less digits than its factorization.

30389216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 30389216 is about 5512.6414721075. The cubic root of 30389216 is about 312.0612415395.

The spelling of 30389216 in words is "thirty million, three hundred eighty-nine thousand, two hundred sixteen".