13122587 has 8 divisors (see below), whose sum is σ = 13705200. Its totient is φ = 12548704.

The previous prime is 13122547. The next prime is 13122601. The reversal of 13122587 is 78522131.

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 13122587 - 2⁶ = 13122523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (1713150).

Almost surely, 2^13122587 is an apocalyptic number.

13122587 is a deficient number, since it is larger than the sum of its proper divisors (582613).

13122587 is a wasteful number, since it uses less digits than its factorization.

13122587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365.

The product of its digits is 3360, while the sum is 29.

The square root of 13122587 is about 3622.5111456005. The cubic root of 13122587 is about 235.8702425164.

The spelling of 13122587 in words is "thirteen million, one hundred twenty-two thousand, five hundred eighty-seven".