13238643 has 16 divisors (see below), whose sum is σ = 19878912. Its totient is φ = 7764000.

The previous prime is 13238633. The next prime is 13238653. The reversal of 13238643 is 34683231.

It is an interprime number because it is at equal distance from previous prime (13238633) and next prime (13238653).

It is not a de Polignac number, because 13238643 - 2⁴ = 13238627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13238643.

It is not an unprimeable number, because it can be changed into a prime (13238633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5448 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (1242432).

Almost surely, 2^13238643 is an apocalyptic number.

13238643 is a deficient number, since it is larger than the sum of its proper divisors (6640269).

13238643 is a wasteful number, since it uses less digits than its factorization.

13238643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12986.

The product of its digits is 10368, while the sum is 30.

The square root of 13238643 is about 3638.4946062898. The cubic root of 13238643 is about 236.5635471760.

The spelling of 13238643 in words is "thirteen million, two hundred thirty-eight thousand, six hundred forty-three".