13418816 has 14 divisors (see below), whose sum is σ = 26628090. Its totient is φ = 6709376.

The previous prime is 13418813. The next prime is 13418819. The reversal of 13418816 is 61881431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13418813) and next prime (13418819).

It can be written as a sum of positive squares in only one way, i.e., 7268416 + 6150400 = 2696^2 + 2480^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13418813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104771 + ... + 104898.

Almost surely, 2^13418816 is an apocalyptic number.

13418816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13418816 is a deficient number, since it is larger than the sum of its proper divisors (13209274).

13418816 is an equidigital number, since it uses as much as digits as its factorization.

13418816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209681 (or 209671 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 13418816 is about 3663.1702117155. The cubic root of 13418816 is about 237.6318957132.

The spelling of 13418816 in words is "thirteen million, four hundred eighteen thousand, eight hundred sixteen".