30930328 has 64 divisors (see below), whose sum is σ = 71769600. Its totient is φ = 12286080.

The previous prime is 30930313. The next prime is 30930329. The reversal of 30930328 is 82303903.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30930296 and 30930305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30930329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21025 + ... + 22447.

It is an arithmetic number, because the mean of its divisors is an integer number (1121400).

Almost surely, 2^30930328 is an apocalyptic number.

30930328 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30930328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35884800).

30930328 is an abundant number, since it is smaller than the sum of its proper divisors (40839272).

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

30930328 is a wasteful number, since it uses less digits than its factorization.

30930328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30930328 is about 5561.5041130975. The cubic root of 30930328 is about 313.9025486327.

The spelling of 30930328 in words is "thirty million, nine hundred thirty thousand, three hundred twenty-eight".