13021984 has 24 divisors (see below), whose sum is σ = 26466048. Its totient is φ = 6300480.

The previous prime is 13021927. The next prime is 13021993. The reversal of 13021984 is 48912031.

It is a happy number.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5572 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (1102752).

Almost surely, 2^13021984 is an apocalyptic number.

It is an amenable number.

13021984 is an abundant number, since it is smaller than the sum of its proper divisors (13444064).

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

13021984 is a wasteful number, since it uses less digits than its factorization.

13021984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168 (or 13160 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 13021984 is about 3608.5986199632. The cubic root of 13021984 is about 235.2659370564.

The spelling of 13021984 in words is "thirteen million, twenty-one thousand, nine hundred eighty-four".