16642271 has 8 divisors (see below), whose sum is σ = 18280320. Its totient is φ = 15080472.

The previous prime is 16642253. The next prime is 16642313. The reversal of 16642271 is 17224661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16642271 - 2¹⁴ = 16625887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16642211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18605 + ... + 19478.

It is an arithmetic number, because the mean of its divisors is an integer number (2285040).

Almost surely, 2^16642271 is an apocalyptic number.

16642271 is a deficient number, since it is larger than the sum of its proper divisors (1638049).

16642271 is a wasteful number, since it uses less digits than its factorization.

16642271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38125.

The product of its digits is 4032, while the sum is 29.

The square root of 16642271 is about 4079.4939637166. The cubic root of 16642271 is about 255.3117857428.

The spelling of 16642271 in words is "sixteen million, six hundred forty-two thousand, two hundred seventy-one".