13828649 has 4 divisors (see below), whose sum is σ = 13937664. Its totient is φ = 13719636.

The previous prime is 13828631. The next prime is 13828651. The reversal of 13828649 is 94682831.

13828649 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13828649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13828349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54317 + ... + 54570.

It is an arithmetic number, because the mean of its divisors is an integer number (3484416).

Almost surely, 2^13828649 is an apocalyptic number.

It is an amenable number.

13828649 is a deficient number, since it is larger than the sum of its proper divisors (109015).

13828649 is a wasteful number, since it uses less digits than its factorization.

13828649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109014.

The product of its digits is 82944, while the sum is 41.

The square root of 13828649 is about 3718.6891507627. The cubic root of 13828649 is about 240.0269009198.

The spelling of 13828649 in words is "thirteen million, eight hundred twenty-eight thousand, six hundred forty-nine".