12918016 has 18 divisors (see below), whose sum is σ = 25786082. Its totient is φ = 6458880.

The previous prime is 12918013. The next prime is 12918023. The reversal of 12918016 is 61081921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12278016 + 640000 = 3504^2 + 800^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24975 + ... + 25486.

Almost surely, 2^12918016 is an apocalyptic number.

12918016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12918016 is a deficient number, since it is larger than the sum of its proper divisors (12868066).

12918016 is an frugal number, since it uses more digits than its factorization.

12918016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50477 (or 50463 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12918016 is about 3594.1641587440. The cubic root of 12918016 is about 234.6381393238.

Adding to 12918016 its reverse (61081921), we get a palindrome (73999937).

It can be divided in two parts, 129 and 18016, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 12918016 in words is "twelve million, nine hundred eighteen thousand, sixteen".