13280387 has 4 divisors (see below), whose sum is σ = 13381896. Its totient is φ = 13178880.

The previous prime is 13280363. The next prime is 13280401. The reversal of 13280387 is 78308231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13280387 - 2¹⁴ = 13264003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13280317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50558 + ... + 50819.

It is an arithmetic number, because the mean of its divisors is an integer number (3345474).

Almost surely, 2^13280387 is an apocalyptic number.

13280387 is a deficient number, since it is larger than the sum of its proper divisors (101509).

13280387 is a wasteful number, since it uses less digits than its factorization.

13280387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101508.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 13280387 is about 3644.2265297317. The cubic root of 13280387 is about 236.8119298207.

The spelling of 13280387 in words is "thirteen million, two hundred eighty thousand, three hundred eighty-seven".