13271747 has 12 divisors (see below), whose sum is σ = 14846520. Its totient is φ = 11828736.

The previous prime is 13271743. The next prime is 13271749. The reversal of 13271747 is 74717231.

It is not a de Polignac number, because 13271747 - 2² = 13271743 is a prime.

It is a super-2 number, since 2×13271747² = 352278536864018, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13271743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4283 + ... + 6699.

It is an arithmetic number, because the mean of its divisors is an integer number (1237210).

Almost surely, 2^13271747 is an apocalyptic number.

13271747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13271747 is a deficient number, since it is larger than the sum of its proper divisors (1574773).

13271747 is a wasteful number, since it uses less digits than its factorization.

13271747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2453 counting only the distinct ones).

The product of its digits is 8232, while the sum is 32.

The square root of 13271747 is about 3643.0409001273. The cubic root of 13271747 is about 236.7605633723.

Adding to 13271747 its reverse (74717231), we get a palindrome (87988978).

The spelling of 13271747 in words is "thirteen million, two hundred seventy-one thousand, seven hundred forty-seven".