12002538 has 8 divisors (see below), whose sum is σ = 24005088. Its totient is φ = 4000844.

The previous prime is 12002519. The next prime is 12002579. The reversal of 12002538 is 83520021.

It is a sphenic number, since it is the product of 3 distinct primes.

12002538 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1000206 + ... + 1000217.

It is an arithmetic number, because the mean of its divisors is an integer number (3000636).

Almost surely, 2^12002538 is an apocalyptic number.

12002538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12002538 is a wasteful number, since it uses less digits than its factorization.

12002538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000428.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12002538 is about 3464.4679245160. The cubic root of 12002538 is about 228.9589878437.

Adding to 12002538 its reverse (83520021), we get a palindrome (95522559).

The spelling of 12002538 in words is "twelve million, two thousand, five hundred thirty-eight".