16020871 has 4 divisors (see below), whose sum is σ = 16034272. Its totient is φ = 16007472.

The previous prime is 16020869. The next prime is 16020877. The reversal of 16020871 is 17802061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17802061 = 1063 ⋅16747.

It is a cyclic number.

It is not a de Polignac number, because 16020871 - 2¹ = 16020869 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 (16020877) 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, 4710 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (4008568).

Almost surely, 2^16020871 is an apocalyptic number.

16020871 is a deficient number, since it is larger than the sum of its proper divisors (13401).

16020871 is a wasteful number, since it uses less digits than its factorization.

16020871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13400.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 16020871 is about 4002.6080247758. The cubic root of 16020871 is about 252.0937282572.

The spelling of 16020871 in words is "sixteen million, twenty thousand, eight hundred seventy-one".