13720227 has 4 divisors (see below), whose sum is σ = 18293640. Its totient is φ = 9146816.

The previous prime is 13720211. The next prime is 13720247. The reversal of 13720227 is 72202731.

13720227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72202731 = 3 ⋅24067577.

It is a cyclic number.

It is not a de Polignac number, because 13720227 - 2⁴ = 13720211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13720197 and 13720206.

It is not an unprimeable number, because it can be changed into a prime (13720247) 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, 2286702 + ... + 2286707.

It is an arithmetic number, because the mean of its divisors is an integer number (4573410).

Almost surely, 2^13720227 is an apocalyptic number.

13720227 is a deficient number, since it is larger than the sum of its proper divisors (4573413).

13720227 is an equidigital number, since it uses as much as digits as its factorization.

13720227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573412.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 13720227 is about 3704.0824774835. The cubic root of 13720227 is about 239.3979528150.

Adding to 13720227 its reverse (72202731), we get a palindrome (85922958).

The spelling of 13720227 in words is "thirteen million, seven hundred twenty thousand, two hundred twenty-seven".