30112 has 12 divisors (see below), whose sum is σ = 59346.
Its totient is φ = 15040.
The previous prime is 30109. The next prime is 30113. The reversal of 30112 is 21103.
It can be written as a sum of positive squares in only one way, i.e., 24336 + 5776 = 156^2 + 76^2
It is a junction number, because it is equal to n+sod(n) for n = 30095 and 30104.
It is not an unprimeable number, because it can be changed into a prime (30113) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439 + ... + 502.
230112 is an apocalyptic number.
30112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.
It is an amenable number.
30112 is a deficient number, since it is larger than the sum of its proper divisors (29234).
30112 is an equidigital number, since it uses as much as digits as its factorization.
30112 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 951 (or 943 counting only the distinct ones).
The product of its (nonzero) digits is 6, while the sum is 7.
The square root of 30112 is about 173.5280957079.
The cubic root of 30112 is about 31.1109448215.
Adding to 30112 its reverse (21103), we get a palindrome (51215).
Subtracting from 30112 its reverse (21103), we obtain a palindrome (9009).
It can be divided in two parts, 301 and 12, that added together give a palindrome (313).
The spelling of 30112 in words is "thirty thousand, one hundred twelve".