13801215 has 16 divisors (see below), whose sum is σ = 22621536. Its totient is φ = 7180800.

The previous prime is 13801213. The next prime is 13801261. The reversal of 13801215 is 51210831.

It is not a de Polignac number, because 13801215 - 2¹ = 13801213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13801191 and 13801200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13801213) 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, 10606 + ... + 11835.

It is an arithmetic number, because the mean of its divisors is an integer number (1413846).

Almost surely, 2^13801215 is an apocalyptic number.

13801215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13801215 is a deficient number, since it is larger than the sum of its proper divisors (8820321).

13801215 is a wasteful number, since it uses less digits than its factorization.

13801215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22490.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 13801215 is about 3714.9986541047. The cubic root of 13801215 is about 239.8680698512.

The spelling of 13801215 in words is "thirteen million, eight hundred one thousand, two hundred fifteen".