12872639 has 8 divisors (see below), whose sum is σ = 13892592. Its totient is φ = 11856960.

The previous prime is 12872627. The next prime is 12872653. The reversal of 12872639 is 93627821.

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

It is a cyclic number.

It is not a de Polignac number, because 12872639 - 2¹² = 12868543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12872039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8267 + ... + 9699.

It is an arithmetic number, because the mean of its divisors is an integer number (1736574).

Almost surely, 2^12872639 is an apocalyptic number.

12872639 is a deficient number, since it is larger than the sum of its proper divisors (1019953).

12872639 is a wasteful number, since it uses less digits than its factorization.

12872639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its digits is 36288, while the sum is 38.

The square root of 12872639 is about 3587.8460111883. The cubic root of 12872639 is about 234.3630799034.

The spelling of 12872639 in words is "twelve million, eight hundred seventy-two thousand, six hundred thirty-nine".