13230639 has 6 divisors (see below), whose sum is σ = 19110936. Its totient is φ = 8820420.

The previous prime is 13230619. The next prime is 13230643. The reversal of 13230639 is 93603231.

13230639 is a `hidden beast` number, since 1 + 3 + 23 + 0 + 639 = 666.

It is not a de Polignac number, because 13230639 - 2⁸ = 13230383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230619) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 735027 + ... + 735044.

It is an arithmetic number, because the mean of its divisors is an integer number (3185156).

Almost surely, 2^13230639 is an apocalyptic number.

13230639 is a deficient number, since it is larger than the sum of its proper divisors (5880297).

13230639 is a wasteful number, since it uses less digits than its factorization.

13230639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470077 (or 1470074 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 13230639 is about 3637.3945345535. The cubic root of 13230639 is about 236.5158626223.

The spelling of 13230639 in words is "thirteen million, two hundred thirty thousand, six hundred thirty-nine".