13208987 has 8 divisors (see below), whose sum is σ = 14487552. Its totient is φ = 11943400.

The previous prime is 13208981. The next prime is 13209013. The reversal of 13208987 is 78980231.

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 13208987 - 2⁸ = 13208731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13208987.

It is not an unprimeable number, because it can be changed into a prime (13208981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043 + ... + 5244.

It is an arithmetic number, because the mean of its divisors is an integer number (1810944).

Almost surely, 2^13208987 is an apocalyptic number.

13208987 is a deficient number, since it is larger than the sum of its proper divisors (1278565).

13208987 is a wasteful number, since it uses less digits than its factorization.

13208987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 13208987 is about 3634.4170096454. The cubic root of 13208987 is about 236.3867724215.

The spelling of 13208987 in words is "thirteen million, two hundred eight thousand, nine hundred eighty-seven".