16191488 has 52 divisors (see below), whose sum is σ = 33419280. Its totient is φ = 7839744.

The previous prime is 16191457. The next prime is 16191491. The reversal of 16191488 is 88419161.

Its product of digits (13824) is a multiple of the sum of its prime divisors (128).

It is a nialpdrome in base 16.

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, 241631 + ... + 241697.

Almost surely, 2^16191488 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 16191488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16709640).

16191488 is an abundant number, since it is smaller than the sum of its proper divisors (17227792).

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

16191488 is an frugal number, since it uses more digits than its factorization.

16191488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 128 counting only the distinct ones).

The product of its digits is 13824, while the sum is 38.

The square root of 16191488 is about 4023.8648088622. The cubic root of 16191488 is about 252.9854751669.

The spelling of 16191488 in words is "sixteen million, one hundred ninety-one thousand, four hundred eighty-eight".