16858241 has 4 divisors (see below), whose sum is σ = 17591232. Its totient is φ = 16125252.

The previous prime is 16858217. The next prime is 16858243. The reversal of 16858241 is 14285861.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14285861 = 2731 ⋅5231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16858241 is a prime.

It is a super-2 number, since 2×16858241² = 568400579228162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16858243) 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, 366461 + ... + 366506.

It is an arithmetic number, because the mean of its divisors is an integer number (4397808).

Almost surely, 2^16858241 is an apocalyptic number.

It is an amenable number.

16858241 is a deficient number, since it is larger than the sum of its proper divisors (732991).

16858241 is an equidigital number, since it uses as much as digits as its factorization.

16858241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732990.

The product of its digits is 15360, while the sum is 35.

The square root of 16858241 is about 4105.8788340622. The cubic root of 16858241 is about 256.4114528046.

The spelling of 16858241 in words is "sixteen million, eight hundred fifty-eight thousand, two hundred forty-one".