13817816 has 16 divisors (see below), whose sum is σ = 26744640. Its totient is φ = 6685920.

The previous prime is 13817743. The next prime is 13817819. The reversal of 13817816 is 61871831.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13817819) 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, 27611 + ... + 28106.

It is an arithmetic number, because the mean of its divisors is an integer number (1671540).

Almost surely, 2^13817816 is an apocalyptic number.

It is an amenable number.

13817816 is a deficient number, since it is larger than the sum of its proper divisors (12926824).

13817816 is a wasteful number, since it uses less digits than its factorization.

13817816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55754 (or 55750 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 13817816 is about 3717.2323037443. The cubic root of 13817816 is about 239.9642076253.

The spelling of 13817816 in words is "thirteen million, eight hundred seventeen thousand, eight hundred sixteen".