13789281 has 12 divisors (see below), whose sum is σ = 20209616. Its totient is φ = 8356920.

The previous prime is 13789273. The next prime is 13789289. The reversal of 13789281 is 18298731.

13789281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13789273) and next prime (13789289).

It is not a de Polignac number, because 13789281 - 2³ = 13789273 is a prime.

It is a super-2 number, since 2×13789281² = 380288540993922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13789289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18631 + ... + 19356.

Almost surely, 2^13789281 is an apocalyptic number.

13789281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13789281 is a deficient number, since it is larger than the sum of its proper divisors (6420335).

13789281 is a wasteful number, since it uses less digits than its factorization.

13789281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38012 (or 38001 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 13789281 is about 3713.3921150344. The cubic root of 13789281 is about 239.7989114223.

The spelling of 13789281 in words is "thirteen million, seven hundred eighty-nine thousand, two hundred eighty-one".