12940016 has 10 divisors (see below), whose sum is σ = 25071312. Its totient is φ = 6470000.

The previous prime is 12940001. The next prime is 12940073. The reversal of 12940016 is 61004921.

It is a happy number.

12940016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12939973 and 12940000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404360 + ... + 404391.

Almost surely, 2^12940016 is an apocalyptic number.

12940016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12940016 is a deficient number, since it is larger than the sum of its proper divisors (12131296).

12940016 is an equidigital number, since it uses as much as digits as its factorization.

12940016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808759 (or 808753 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12940016 is about 3597.2233736592. The cubic root of 12940016 is about 234.7712637766.

Adding to 12940016 its reverse (61004921), we get a palindrome (73944937).

The spelling of 12940016 in words is "twelve million, nine hundred forty thousand, sixteen".