13206428 has 12 divisors (see below), whose sum is σ = 23675232. Its totient is φ = 6442080.

The previous prime is 13206421. The next prime is 13206449. The reversal of 13206428 is 82460231.

It is a junction number, because it is equal to n+sod(n) for n = 13206397 and 13206406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13206421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40100 + ... + 40427.

It is an arithmetic number, because the mean of its divisors is an integer number (1972936).

Almost surely, 2^13206428 is an apocalyptic number.

It is an amenable number.

13206428 is a deficient number, since it is larger than the sum of its proper divisors (10468804).

13206428 is a wasteful number, since it uses less digits than its factorization.

13206428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80572 (or 80570 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 13206428 is about 3634.0649416322. The cubic root of 13206428 is about 236.3715062289.

Adding to 13206428 its reverse (82460231), we get a palindrome (95666659).

The spelling of 13206428 in words is "thirteen million, two hundred six thousand, four hundred twenty-eight".