30207320 has 64 divisors (see below), whose sum is σ = 79863840. Its totient is φ = 10137600.

The previous prime is 30207319. The next prime is 30207329. The reversal of 30207320 is 2370203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30207329) 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, 3080 + ... + 8360.

Almost surely, 2^30207320 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 30207320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39931920).

30207320 is an abundant number, since it is smaller than the sum of its proper divisors (49656520).

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

30207320 is a wasteful number, since it uses less digits than its factorization.

30207320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316 (or 5312 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 30207320 is about 5496.1186304519. The cubic root of 30207320 is about 311.4373763548.

Adding to 30207320 its reverse (2370203), we get a palindrome (32577523).

The spelling of 30207320 in words is "thirty million, two hundred seven thousand, three hundred twenty".