13278822 has 8 divisors (see below), whose sum is σ = 26557656. Its totient is φ = 4426272.

The previous prime is 13278821. The next prime is 13278823. The reversal of 13278822 is 22887231.

It is an interprime number because it is at equal distance from previous prime (13278821) and next prime (13278823).

It is a sphenic number, since it is the product of 3 distinct primes.

13278822 is an admirable number.

It is a super-2 number, since 2×13278822² = 352654227415368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13278821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106563 + ... + 1106574.

It is an arithmetic number, because the mean of its divisors is an integer number (3319707).

Almost surely, 2^13278822 is an apocalyptic number.

13278822 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.

13278822 is a wasteful number, since it uses less digits than its factorization.

13278822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213142.

The product of its digits is 10752, while the sum is 33.

The square root of 13278822 is about 3644.0118002004. The cubic root of 13278822 is about 236.8026272497.

The spelling of 13278822 in words is "thirteen million, two hundred seventy-eight thousand, eight hundred twenty-two".