16021008 has 60 divisors (see below), whose sum is σ = 45497088. Its totient is φ = 5261760.

The previous prime is 16020997. The next prime is 16021013. The reversal of 16021008 is 80012061.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 9441 + ... + 11007.

Almost surely, 2^16021008 is an apocalyptic number.

16021008 is a gapful number since it is divisible by the number (18) 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 16021008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22748544).

16021008 is an abundant number, since it is smaller than the sum of its proper divisors (29476080).

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

16021008 is a wasteful number, since it uses less digits than its factorization.

16021008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 16021008 is about 4002.6251385809. The cubic root of 16021008 is about 252.0944468353.

Adding to 16021008 its reverse (80012061), we get a palindrome (96033069).

The spelling of 16021008 in words is "sixteen million, twenty-one thousand, eight".