30328064 has 54 divisors (see below), whose sum is σ = 65646126. Its totient is φ = 13977600.

The previous prime is 30328063. The next prime is 30328087. The reversal of 30328064 is 46082303.

It can be written as a sum of positive squares in 3 ways, for example, as 1254400 + 29073664 = 1120^2 + 5392^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30328061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42914 + ... + 43614.

It is an arithmetic number, because the mean of its divisors is an integer number (1215669).

Almost surely, 2^30328064 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 30328064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32823063).

30328064 is an abundant number, since it is smaller than the sum of its proper divisors (35318062).

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

30328064 is an equidigital number, since it uses as much as digits as its factorization.

30328064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 30328064 is about 5507.0921546675. The cubic root of 30328064 is about 311.8517814504.

The spelling of 30328064 in words is "thirty million, three hundred twenty-eight thousand, sixty-four".