30123320 has 64 divisors (see below), whose sum is σ = 74131200. Its totient is φ = 10967040.

The previous prime is 30123281. The next prime is 30123329. The reversal of 30123320 is 2332103.

It is a super-3 number, since 3×30123320³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30123295 and 30123304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20366 + ... + 21794.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^30123320 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 30123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37065600).

30123320 is an abundant number, since it is smaller than the sum of its proper divisors (44007880).

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

30123320 is a wasteful number, since it uses less digits than its factorization.

30123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 30123320 is about 5488.4715540850. The cubic root of 30123320 is about 311.1484284413.

Adding to 30123320 its reverse (2332103), we get a palindrome (32455423).

The spelling of 30123320 in words is "thirty million, one hundred twenty-three thousand, three hundred twenty".