30328530 has 64 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 7755264.

The previous prime is 30328523. The next prime is 30328547. The reversal of 30328530 is 3582303.

It is a self number, because there is not a number n which added to its sum of digits gives 30328530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98637 + ... + 98943.

It is an arithmetic number, because the mean of its divisors is an integer number (1185030).

Almost surely, 2^30328530 is an apocalyptic number.

30328530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30328530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37920960).

30328530 is an abundant number, since it is smaller than the sum of its proper divisors (45513390).

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

30328530 is a wasteful number, since it uses less digits than its factorization.

30328530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 30328530 is about 5507.1344635845. The cubic root of 30328530 is about 311.8533786749.

The spelling of 30328530 in words is "thirty million, three hundred twenty-eight thousand, five hundred thirty".