13481278 has 8 divisors (see below), whose sum is σ = 20422440. Its totient is φ = 6673800.

The previous prime is 13481269. The next prime is 13481287. The reversal of 13481278 is 87218431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13481269) and next prime (13481287).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33168 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (2552805).

Almost surely, 2^13481278 is an apocalyptic number.

13481278 is a deficient number, since it is larger than the sum of its proper divisors (6941162).

13481278 is a wasteful number, since it uses less digits than its factorization.

13481278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66842.

The product of its digits is 10752, while the sum is 34.

The square root of 13481278 is about 3671.6859887523. The cubic root of 13481278 is about 238.0000353082. Note that the first 4 decimals are identical.

The spelling of 13481278 in words is "thirteen million, four hundred eighty-one thousand, two hundred seventy-eight".