13387745 has 8 divisors (see below), whose sum is σ = 18360384. Its totient is φ = 9180144.

The previous prime is 13387729. The next prime is 13387757. The reversal of 13387745 is 54778331.

13387745 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 13387745 - 2⁴ = 13387729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13387699 and 13387708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191219 + ... + 191288.

It is an arithmetic number, because the mean of its divisors is an integer number (2295048).

Almost surely, 2^13387745 is an apocalyptic number.

It is an amenable number.

13387745 is a deficient number, since it is larger than the sum of its proper divisors (4972639).

13387745 is an equidigital number, since it uses as much as digits as its factorization.

13387745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382519.

The product of its digits is 70560, while the sum is 38.

The square root of 13387745 is about 3658.9267552112. The cubic root of 13387745 is about 237.4483433360.

It can be divided in two parts, 133 and 87745, that added together give a palindrome (87878).

The spelling of 13387745 in words is "thirteen million, three hundred eighty-seven thousand, seven hundred forty-five".