12072638 has 8 divisors (see below), whose sum is σ = 19062120. Its totient is φ = 5718600.

The previous prime is 12072617. The next prime is 12072649. The reversal of 12072638 is 83627021.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12072638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158813 + ... + 158888.

It is an arithmetic number, because the mean of its divisors is an integer number (2382765).

Almost surely, 2^12072638 is an apocalyptic number.

12072638 is a deficient number, since it is larger than the sum of its proper divisors (6989482).

12072638 is a wasteful number, since it uses less digits than its factorization.

12072638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317722.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12072638 is about 3474.5701892464. The cubic root of 12072638 is about 229.4038626328.

Adding to 12072638 its reverse (83627021), we get a palindrome (95699659).

The spelling of 12072638 in words is "twelve million, seventy-two thousand, six hundred thirty-eight".