13428387 has 12 divisors (see below), whose sum is σ = 22167600. Its totient is φ = 7673328.

The previous prime is 13428379. The next prime is 13428403. The reversal of 13428387 is 78382431.

It is not a de Polignac number, because 13428387 - 2³ = 13428379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13428347) 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 11 ways as a sum of consecutive naturals, for example, 106512 + ... + 106637.

It is an arithmetic number, because the mean of its divisors is an integer number (1847300).

Almost surely, 2^13428387 is an apocalyptic number.

13428387 is a deficient number, since it is larger than the sum of its proper divisors (8739213).

13428387 is a wasteful number, since it uses less digits than its factorization.

13428387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213162 (or 213159 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 13428387 is about 3664.4763609553. The cubic root of 13428387 is about 237.6883794435.

The spelling of 13428387 in words is "thirteen million, four hundred twenty-eight thousand, three hundred eighty-seven".