13028587 has 16 divisors (see below), whose sum is σ = 15805440. Its totient is φ = 10576800.

The previous prime is 13028581. The next prime is 13028591. The reversal of 13028587 is 78582031.

It is not a de Polignac number, because 13028587 - 2⁷ = 13028459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13028581) 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, 2964 + ... + 5902.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^13028587 is an apocalyptic number.

13028587 is a deficient number, since it is larger than the sum of its proper divisors (2776853).

13028587 is a wasteful number, since it uses less digits than its factorization.

13028587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 13028587 is about 3609.5134021084. The cubic root of 13028587 is about 235.3056954242.

It can be divided in two parts, 1302 and 8587, that added together give a palindrome (9889).

The spelling of 13028587 in words is "thirteen million, twenty-eight thousand, five hundred eighty-seven".