13671236 has 6 divisors (see below), whose sum is σ = 23924670. Its totient is φ = 6835616.

The previous prime is 13671233. The next prime is 13671253. The reversal of 13671236 is 63217631.

It can be written as a sum of positive squares in only one way, i.e., 13645636 + 25600 = 3694^2 + 160^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13671199 and 13671208.

It is not an unprimeable number, because it can be changed into a prime (13671233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1708901 + ... + 1708908.

It is an arithmetic number, because the mean of its divisors is an integer number (3987445).

Almost surely, 2^13671236 is an apocalyptic number.

It is an amenable number.

13671236 is a deficient number, since it is larger than the sum of its proper divisors (10253434).

13671236 is a wasteful number, since it uses less digits than its factorization.

13671236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417813 (or 3417811 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 13671236 is about 3697.4634548566. The cubic root of 13671236 is about 239.1126724917.

Adding to 13671236 its reverse (63217631), we get a palindrome (76888867).

The spelling of 13671236 in words is "thirteen million, six hundred seventy-one thousand, two hundred thirty-six".