13001988 has 24 divisors (see below), whose sum is σ = 30518208. Its totient is φ = 4308256.

The previous prime is 13001981. The next prime is 13001993. The reversal of 13001988 is 88910031.

It is not an unprimeable number, because it can be changed into a prime (13001981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (1271592).

Almost surely, 2^13001988 is an apocalyptic number.

It is an amenable number.

13001988 is an abundant number, since it is smaller than the sum of its proper divisors (17516220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13001988 is a wasteful number, since it uses less digits than its factorization.

13001988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6441 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 13001988 is about 3605.8269509226. The cubic root of 13001988 is about 235.1454539390.

The spelling of 13001988 in words is "thirteen million, one thousand, nine hundred eighty-eight".