30316220 has 48 divisors (see below), whose sum is σ = 71166816. Its totient is φ = 10752000.

The previous prime is 30316217. The next prime is 30316249. The reversal of 30316220 is 2261303.

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, 7340 + ... + 10700.

It is an arithmetic number, because the mean of its divisors is an integer number (1482642).

Almost surely, 2^30316220 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 30316220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35583408).

30316220 is an abundant number, since it is smaller than the sum of its proper divisors (40850596).

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

30316220 is a wasteful number, since it uses less digits than its factorization.

30316220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422 (or 3420 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30316220 is about 5506.0167090193. The cubic root of 30316220 is about 311.8111804038.

Adding to 30316220 its reverse (2261303), we get a palindrome (32577523).

The spelling of 30316220 in words is "thirty million, three hundred sixteen thousand, two hundred twenty".