13428386 has 4 divisors (see below), whose sum is σ = 20142582. Its totient is φ = 6714192.

The previous prime is 13428379. The next prime is 13428403. The reversal of 13428386 is 68382431.

It is a happy number.

13428386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68382431 = 13 ⋅5260187.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 1311025 = 3481^2 + 1145^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357095 + ... + 3357098.

Almost surely, 2^13428386 is an apocalyptic number.

13428386 is a deficient number, since it is larger than the sum of its proper divisors (6714196).

13428386 is an equidigital number, since it uses as much as digits as its factorization.

13428386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6714195.

The product of its digits is 27648, while the sum is 35.

The square root of 13428386 is about 3664.4762245101. The cubic root of 13428386 is about 237.6883735434.

The spelling of 13428386 in words is "thirteen million, four hundred twenty-eight thousand, three hundred eighty-six".