13729285 has 8 divisors (see below), whose sum is σ = 17444376. Its totient is φ = 10337280.

The previous prime is 13729223. The next prime is 13729291. The reversal of 13729285 is 58292731.

13729285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6584356 + 7144929 = 2566^2 + 2673^2 .

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

It is not a de Polignac number, because 13729285 - 2¹³ = 13721093 is a prime.

It is a super-3 number, since 3×13729285³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80676 + ... + 80845.

It is an arithmetic number, because the mean of its divisors is an integer number (2180547).

Almost surely, 2^13729285 is an apocalyptic number.

It is an amenable number.

13729285 is a deficient number, since it is larger than the sum of its proper divisors (3715091).

13729285 is a wasteful number, since it uses less digits than its factorization.

13729285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161543.

The product of its digits is 30240, while the sum is 37.

The square root of 13729285 is about 3705.3049807000. The cubic root of 13729285 is about 239.4506241892.

The spelling of 13729285 in words is "thirteen million, seven hundred twenty-nine thousand, two hundred eighty-five".