13677728 has 12 divisors (see below), whose sum is σ = 26928090. Its totient is φ = 6838848.

The previous prime is 13677689. The next prime is 13677733. The reversal of 13677728 is 82777631.

It can be written as a sum of positive squares in only one way, i.e., 11751184 + 1926544 = 3428^2 + 1388^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213683 + ... + 213746.

Almost surely, 2^13677728 is an apocalyptic number.

It is an amenable number.

13677728 is a deficient number, since it is larger than the sum of its proper divisors (13250362).

13677728 is an equidigital number, since it uses as much as digits as its factorization.

13677728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427439 (or 427431 counting only the distinct ones).

The product of its digits is 98784, while the sum is 41.

The square root of 13677728 is about 3698.3412498038. The cubic root of 13677728 is about 239.1505152983.

The spelling of 13677728 in words is "thirteen million, six hundred seventy-seven thousand, seven hundred twenty-eight".