16442857 has 4 divisors (see below), whose sum is σ = 16456576. Its totient is φ = 16429140.

The previous prime is 16442849. The next prime is 16442863. The reversal of 16442857 is 75824461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16442857 - 2³ = 16442849 is a prime.

It is a super-3 number, since 3×16442857³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16442807) 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, 4869 + ... + 7522.

It is an arithmetic number, because the mean of its divisors is an integer number (4114144).

Almost surely, 2^16442857 is an apocalyptic number.

It is an amenable number.

16442857 is a deficient number, since it is larger than the sum of its proper divisors (13719).

16442857 is a wasteful number, since it uses less digits than its factorization.

16442857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13718.

The product of its digits is 53760, while the sum is 37.

The square root of 16442857 is about 4054.9792847806. The cubic root of 16442857 is about 254.2879378762.

The spelling of 16442857 in words is "sixteen million, four hundred forty-two thousand, eight hundred fifty-seven".