13709285 has 16 divisors (see below), whose sum is σ = 17098752. Its totient is φ = 10540800.

The previous prime is 13709249. The next prime is 13709287. The reversal of 13709285 is 58290731.

It is not a de Polignac number, because 13709285 - 2⁶ = 13709221 is a prime.

It is a super-2 number, since 2×13709285² = 375888990422450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13709287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37172 + ... + 37538.

It is an arithmetic number, because the mean of its divisors is an integer number (1068672).

Almost surely, 2^13709285 is an apocalyptic number.

It is an amenable number.

13709285 is a deficient number, since it is larger than the sum of its proper divisors (3389467).

13709285 is a wasteful number, since it uses less digits than its factorization.

13709285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 13709285 is about 3702.6051639353. The cubic root of 13709285 is about 239.3342952418.

The spelling of 13709285 in words is "thirteen million, seven hundred nine thousand, two hundred eighty-five".