13278487 has 8 divisors (see below), whose sum is σ = 13658112. Its totient is φ = 12903000.

The previous prime is 13278439. The next prime is 13278493. The reversal of 13278487 is 78487231.

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

It is a cyclic number.

It is not a de Polignac number, because 13278487 - 2²³ = 4889879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13278497) 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 7 ways as a sum of consecutive naturals, for example, 6162 + ... + 8032.

It is an arithmetic number, because the mean of its divisors is an integer number (1707264).

Almost surely, 2^13278487 is an apocalyptic number.

13278487 is a deficient number, since it is larger than the sum of its proper divisors (379625).

13278487 is a wasteful number, since it uses less digits than its factorization.

13278487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its digits is 75264, while the sum is 40.

The square root of 13278487 is about 3643.9658340879. The cubic root of 13278487 is about 236.8006358696.

The spelling of 13278487 in words is "thirteen million, two hundred seventy-eight thousand, four hundred eighty-seven".