12072530 has 16 divisors (see below), whose sum is σ = 21947544. Its totient is φ = 4780800.

The previous prime is 12072517. The next prime is 12072553. The reversal of 12072530 is 3527021.

It can be written as a sum of positive squares in 4 ways, for example, as 12020089 + 52441 = 3467^2 + 229^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4967 + ... + 6986.

Almost surely, 2^12072530 is an apocalyptic number.

12072530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12072530 is a deficient number, since it is larger than the sum of its proper divisors (9875014).

12072530 is a wasteful number, since it uses less digits than its factorization.

12072530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12061.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 12072530 is about 3474.5546477211. The cubic root of 12072530 is about 229.4031785599.

Adding to 12072530 its reverse (3527021), we get a palindrome (15599551).

The spelling of 12072530 in words is "twelve million, seventy-two thousand, five hundred thirty".