13673728 has 36 divisors (see below), whose sum is σ = 28190848. Its totient is φ = 6612480.

The previous prime is 13673719. The next prime is 13673731. The reversal of 13673728 is 82737631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7075 + ... + 8797.

Almost surely, 2^13673728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13673728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14095424).

13673728 is an abundant number, since it is smaller than the sum of its proper divisors (14517120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13673728 is an equidigital number, since it uses as much as digits as its factorization.

13673728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770 (or 1756 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 13673728 is about 3697.8004272811. The cubic root of 13673728 is about 239.1272001364.

The spelling of 13673728 in words is "thirteen million, six hundred seventy-three thousand, seven hundred twenty-eight".