12183530 has 16 divisors (see below), whose sum is σ = 22290984. Its totient is φ = 4793280.

The previous prime is 12183499. The next prime is 12183539. The reversal of 12183530 is 3538121.

It can be written as a sum of positive squares in 4 ways, for example, as 5583769 + 6599761 = 2363^2 + 2569^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12183496 and 12183505.

It is not an unprimeable number, because it can be changed into a prime (12183539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9377 + ... + 10596.

Almost surely, 2^12183530 is an apocalyptic number.

12183530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12183530 is a deficient number, since it is larger than the sum of its proper divisors (10107454).

12183530 is a wasteful number, since it uses less digits than its factorization.

12183530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20041.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 12183530 is about 3490.4913694206. The cubic root of 12183530 is about 230.1041116559.

The spelling of 12183530 in words is "twelve million, one hundred eighty-three thousand, five hundred thirty".