30500320 has 96 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 11321856.

The previous prime is 30500317. The next prime is 30500381. The reversal of 30500320 is 2300503.

It is a self number, because there is not a number n which added to its sum of digits gives 30500320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240097 + ... + 240223.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^30500320 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 30500320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38707200).

30500320 is an abundant number, since it is smaller than the sum of its proper divisors (46914080).

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

30500320 is a wasteful number, since it uses less digits than its factorization.

30500320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 30500320 is about 5522.7094799564. The cubic root of 30500320 is about 312.4410811588.

Adding to 30500320 its reverse (2300503), we get a palindrome (32800823).

The spelling of 30500320 in words is "thirty million, five hundred thousand, three hundred twenty".