12007538 has 4 divisors (see below), whose sum is σ = 18011310. Its totient is φ = 6003768.

The previous prime is 12007529. The next prime is 12007543. The reversal of 12007538 is 83570021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83570021 = 89 ⋅938989.

It can be written as a sum of positive squares in only one way, i.e., 10608049 + 1399489 = 3257^2 + 1183^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3001883 + ... + 3001886.

Almost surely, 2^12007538 is an apocalyptic number.

12007538 is a deficient number, since it is larger than the sum of its proper divisors (6003772).

12007538 is an equidigital number, since it uses as much as digits as its factorization.

12007538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003771.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12007538 is about 3465.1894609097. The cubic root of 12007538 is about 228.9907765651.

Adding to 12007538 its reverse (83570021), we get a palindrome (95577559).

The spelling of 12007538 in words is "twelve million, seven thousand, five hundred thirty-eight".