13729478 has 8 divisors (see below), whose sum is σ = 23536272. Its totient is φ = 5884056.

The previous prime is 13729433. The next prime is 13729481. The reversal of 13729478 is 87492731.

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

It is a Curzon number.

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, 490325 + ... + 490352.

It is an arithmetic number, because the mean of its divisors is an integer number (2942034).

Almost surely, 2^13729478 is an apocalyptic number.

13729478 is a deficient number, since it is larger than the sum of its proper divisors (9806794).

13729478 is an equidigital number, since it uses as much as digits as its factorization.

13729478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980686.

The product of its digits is 84672, while the sum is 41.

The square root of 13729478 is about 3705.3310243486. The cubic root of 13729478 is about 239.4517462130.

The spelling of 13729478 in words is "thirteen million, seven hundred twenty-nine thousand, four hundred seventy-eight".