13278244 has 12 divisors (see below), whose sum is σ = 26556544. Its totient is φ = 5690664.

The previous prime is 13278229. The next prime is 13278247. The reversal of 13278244 is 44287231.

13278244 is an admirable number.

It is a super-3 number, since 3×13278244³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13278247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237084 + ... + 237139.

Almost surely, 2^13278244 is an apocalyptic number.

13278244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13278244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13278244 is a wasteful number, since it uses less digits than its factorization.

13278244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474234 (or 474232 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 13278244 is about 3643.9324911420. The cubic root of 13278244 is about 236.7991913550.

The spelling of 13278244 in words is "thirteen million, two hundred seventy-eight thousand, two hundred forty-four".