13278312 has 48 divisors (see below), whose sum is σ = 36167040. Its totient is φ = 4400928.

The previous prime is 13278311. The next prime is 13278319. The reversal of 13278312 is 21387231.

It is not an unprimeable number, because it can be changed into a prime (13278311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15643 + ... + 16469.

It is an arithmetic number, because the mean of its divisors is an integer number (753480).

Almost surely, 2^13278312 is an apocalyptic number.

13278312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13278312 is an abundant number, since it is smaller than the sum of its proper divisors (22888728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13278312 is a wasteful number, since it uses less digits than its factorization.

13278312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 1055 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 13278312 is about 3643.9418217090. The cubic root of 13278312 is about 236.7995955831.

The spelling of 13278312 in words is "thirteen million, two hundred seventy-eight thousand, three hundred twelve".