13728707 has 4 divisors (see below), whose sum is σ = 14536296. Its totient is φ = 12921120.

The previous prime is 13728703. The next prime is 13728713. The reversal of 13728707 is 70782731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13728707 - 2² = 13728703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13728703) 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, 403769 + ... + 403802.

It is an arithmetic number, because the mean of its divisors is an integer number (3634074).

Almost surely, 2^13728707 is an apocalyptic number.

13728707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13728707 is a deficient number, since it is larger than the sum of its proper divisors (807589).

13728707 is an equidigital number, since it uses as much as digits as its factorization.

13728707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807588.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 13728707 is about 3705.2269836003. The cubic root of 13728707 is about 239.4472638684.

The spelling of 13728707 in words is "thirteen million, seven hundred twenty-eight thousand, seven hundred seven".