30000320 has 112 divisors (see below), whose sum is σ = 83393280. Its totient is φ = 10066944.

The previous prime is 30000319. The next prime is 30000323. The reversal of 30000320 is 2300003.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 30000298 and 30000307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000323) 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, 132047 + ... + 132273.

Almost surely, 2^30000320 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 30000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41696640).

30000320 is an abundant number, since it is smaller than the sum of its proper divisors (53392960).

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

30000320 is a wasteful number, since it uses less digits than its factorization.

30000320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 30000320 is about 5477.2547868435. The cubic root of 30000320 is about 310.7243553852.

Adding to 30000320 its reverse (2300003), we get a palindrome (32300323).

The spelling of 30000320 in words is "thirty million, three hundred twenty", and thus it is an aban number.