13989024 has 144 divisors (see below), whose sum is σ = 47331648. Its totient is φ = 3981312.

The previous prime is 13989007. The next prime is 13989047. The reversal of 13989024 is 42098931.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13989024.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 54304 + ... + 54560.

It is an arithmetic number, because the mean of its divisors is an integer number (328692).

Almost surely, 2^13989024 is an apocalyptic number.

13989024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13989024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23665824).

13989024 is an abundant number, since it is smaller than the sum of its proper divisors (33342624).

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

13989024 is an equidigital number, since it uses as much as digits as its factorization.

13989024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 13989024 is about 3740.1903694866. The cubic root of 13989024 is about 240.9512248991.

The spelling of 13989024 in words is "thirteen million, nine hundred eighty-nine thousand, twenty-four".