13709056 has 18 divisors (see below), whose sum is σ = 27365072. Its totient is φ = 6854400.

The previous prime is 13709041. The next prime is 13709057. The reversal of 13709056 is 65090731.

It is a super-2 number, since 2×13709056² = 375876432822272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13709057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26520 + ... + 27031.

Almost surely, 2^13709056 is an apocalyptic number.

13709056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13709056 is a deficient number, since it is larger than the sum of its proper divisors (13656016).

13709056 is an frugal number, since it uses more digits than its factorization.

13709056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53567 (or 53553 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 13709056 is about 3702.5742396338. The cubic root of 13709056 is about 239.3329626204.

Adding to 13709056 its reverse (65090731), we get a palindrome (78799787).

The spelling of 13709056 in words is "thirteen million, seven hundred nine thousand, fifty-six".