13723816 has 16 divisors (see below), whose sum is σ = 25780500. Its totient is φ = 6849024.

The previous prime is 13723769. The next prime is 13723819. The reversal of 13723816 is 61832731.

It can be written as a sum of positive squares in 2 ways, for example, as 13351716 + 372100 = 3654^2 + 610^2 .

It is not an unprimeable number, because it can be changed into a prime (13723819) 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, 4110 + ... + 6658.

Almost surely, 2^13723816 is an apocalyptic number.

It is an amenable number.

13723816 is a deficient number, since it is larger than the sum of its proper divisors (12056684).

13723816 is a wasteful number, since it uses less digits than its factorization.

13723816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228 (or 3224 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 13723816 is about 3704.5669112597. The cubic root of 13723816 is about 239.4188252672.

The spelling of 13723816 in words is "thirteen million, seven hundred twenty-three thousand, eight hundred sixteen".