13827021 has 8 divisors (see below), whose sum is σ = 19854240. Its totient is φ = 8508912.

The previous prime is 13827013. The next prime is 13827043. The reversal of 13827021 is 12072831.

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

It is not a de Polignac number, because 13827021 - 2³ = 13827013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13826982 and 13827000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13827061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177231 + ... + 177308.

It is an arithmetic number, because the mean of its divisors is an integer number (2481780).

Almost surely, 2^13827021 is an apocalyptic number.

It is an amenable number.

13827021 is a deficient number, since it is larger than the sum of its proper divisors (6027219).

13827021 is a wasteful number, since it uses less digits than its factorization.

13827021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354555.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 13827021 is about 3718.4702499818. The cubic root of 13827021 is about 240.0174813655.

Adding to 13827021 its reverse (12072831), we get a palindrome (25899852).

The spelling of 13827021 in words is "thirteen million, eight hundred twenty-seven thousand, twenty-one".