14991488 has 32 divisors (see below), whose sum is σ = 30082860. Its totient is φ = 7441408.

The previous prime is 14991439. The next prime is 14991491. The reversal of 14991488 is 88419941.

It can be written as a sum of positive squares in 2 ways, for example, as 10291264 + 4700224 = 3208^2 + 2168^2 .

It is a tau number, because it is divible by the number of its divisors (32).

Its product of digits (82944) is a multiple of the sum of its prime factors (864).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21806 + ... + 22482.

Almost surely, 2^14991488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14991488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15041430).

14991488 is an abundant number, since it is smaller than the sum of its proper divisors (15091372).

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

14991488 is an equidigital number, since it uses as much as digits as its factorization.

14991488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 852 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 14991488 is about 3871.8842957919. The cubic root of 14991488 is about 246.5745488347.

The spelling of 14991488 in words is "fourteen million, nine hundred ninety-one thousand, four hundred eighty-eight".