13540387 has 8 divisors (see below), whose sum is σ = 15767136. Its totient is φ = 11386752.

The previous prime is 13540379. The next prime is 13540391. The reversal of 13540387 is 78304531.

13540387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13540387 - 2³ = 13540379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13540367) 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, 17878 + ... + 18619.

It is an arithmetic number, because the mean of its divisors is an integer number (1970892).

Almost surely, 2^13540387 is an apocalyptic number.

13540387 is a deficient number, since it is larger than the sum of its proper divisors (2226749).

13540387 is an equidigital number, since it uses as much as digits as its factorization.

13540387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36557.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 13540387 is about 3679.7264844007. The cubic root of 13540387 is about 238.3473672057.

The spelling of 13540387 in words is "thirteen million, five hundred forty thousand, three hundred eighty-seven".