12032730 has 24 divisors (see below), whose sum is σ = 31285332. Its totient is φ = 3208704.

The previous prime is 12032729. The next prime is 12032747. The reversal of 12032730 is 3723021.

It can be written as a sum of positive squares in 2 ways, for example, as 10712529 + 1320201 = 3273^2 + 1149^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66759 + ... + 66938.

Almost surely, 2^12032730 is an apocalyptic number.

12032730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12032730 is an abundant number, since it is smaller than the sum of its proper divisors (19252602).

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

12032730 is a wasteful number, since it uses less digits than its factorization.

12032730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133710 (or 133707 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 12032730 is about 3468.8225668085. The cubic root of 12032730 is about 229.1508067628.

Adding to 12032730 its reverse (3723021), we get a palindrome (15755751).

The spelling of 12032730 in words is "twelve million, thirty-two thousand, seven hundred thirty".