16140032 has 36 divisors (see below), whose sum is σ = 32732616. Its totient is φ = 7941120.

The previous prime is 16140031. The next prime is 16140041. The reversal of 16140032 is 23004161.

It is a super-2 number, since 2×16140032² = 521001265922048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16682 + ... + 17622.

Almost surely, 2^16140032 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 16140032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16366308).

16140032 is an abundant number, since it is smaller than the sum of its proper divisors (16592584).

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

16140032 is an frugal number, since it uses more digits than its factorization.

16140032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1010 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16140032 is about 4017.4658679322. The cubic root of 16140032 is about 252.7171976855.

Adding to 16140032 its reverse (23004161), we get a palindrome (39144193).

The spelling of 16140032 in words is "sixteen million, one hundred forty thousand, thirty-two".