13189021 has 8 divisors (see below), whose sum is σ = 14008320. Its totient is φ = 12382272.

The previous prime is 13189019. The next prime is 13189049. The reversal of 13189021 is 12098131.

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 13189021 - 2¹ = 13189019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13189061) 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, 925 + ... + 5218.

It is an arithmetic number, because the mean of its divisors is an integer number (1751040).

Almost surely, 2^13189021 is an apocalyptic number.

It is an amenable number.

13189021 is a deficient number, since it is larger than the sum of its proper divisors (819299).

13189021 is a wasteful number, since it uses less digits than its factorization.

13189021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13189021 is about 3631.6691754619. The cubic root of 13189021 is about 236.2676091500.

The spelling of 13189021 in words is "thirteen million, one hundred eighty-nine thousand, twenty-one".