30112520 has 64 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 11334400.

The previous prime is 30112517. The next prime is 30112529. The reversal of 30112520 is 2521103.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30112495 and 30112504.

It is not an unprimeable number, because it can be changed into a prime (30112529) 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, 65090 + ... + 65550.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^30112520 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 30112520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35925120).

30112520 is an abundant number, since it is smaller than the sum of its proper divisors (41737720).

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

30112520 is a wasteful number, since it uses less digits than its factorization.

30112520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 30112520 is about 5487.4875854074. The cubic root of 30112520 is about 311.1112390400. Note that the first 3 decimals are identical.

Adding to 30112520 its reverse (2521103), we get a palindrome (32633623).

It can be divided in two parts, 301 and 12520, that added together give a palindrome (12821).

The spelling of 30112520 in words is "thirty million, one hundred twelve thousand, five hundred twenty".