13278144 has 56 divisors (see below), whose sum is σ = 38331648. Its totient is φ = 4023040.

The previous prime is 13278121. The next prime is 13278157. The reversal of 13278144 is 44187231.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 5255.

Almost surely, 2^13278144 is an apocalyptic number.

It is an amenable number.

13278144 is an abundant number, since it is smaller than the sum of its proper divisors (25053504).

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

13278144 is a wasteful number, since it uses less digits than its factorization.

13278144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313 (or 6303 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 13278144 is about 3643.9187696764. The cubic root of 13278144 is about 236.7985968994.

The spelling of 13278144 in words is "thirteen million, two hundred seventy-eight thousand, one hundred forty-four".