13671812 has 24 divisors (see below), whose sum is σ = 29830080. Its totient is φ = 5326560.

The previous prime is 13671809. The next prime is 13671829. The reversal of 13671812 is 21817631.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21887 + ... + 22502.

It is an arithmetic number, because the mean of its divisors is an integer number (1242920).

Almost surely, 2^13671812 is an apocalyptic number.

It is an amenable number.

13671812 is an abundant number, since it is smaller than the sum of its proper divisors (16158268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13671812 is a wasteful number, since it uses less digits than its factorization.

13671812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44411 (or 44409 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 13671812 is about 3697.5413452726. The cubic root of 13671812 is about 239.1160305632.

The spelling of 13671812 in words is "thirteen million, six hundred seventy-one thousand, eight hundred twelve".