13772247 has 8 divisors (see below), whose sum is σ = 18380400. Its totient is φ = 9172800.

The previous prime is 13772243. The next prime is 13772249. The reversal of 13772247 is 74227731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13772247 - 2² = 13772243 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13772243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (2297550).

Almost surely, 2^13772247 is an apocalyptic number.

13772247 is a deficient number, since it is larger than the sum of its proper divisors (4608153).

13772247 is a wasteful number, since it uses less digits than its factorization.

13772247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353.

The product of its digits is 16464, while the sum is 33.

The square root of 13772247 is about 3711.0978160108. The cubic root of 13772247 is about 239.7001289506.

Adding to 13772247 its reverse (74227731), we get a palindrome (87999978).

The spelling of 13772247 in words is "thirteen million, seven hundred seventy-two thousand, two hundred forty-seven".