16242889 has 8 divisors (see below), whose sum is σ = 17965640. Its totient is φ = 14587776.

The previous prime is 16242887. The next prime is 16242913. The reversal of 16242889 is 98824261.

It can be written as a sum of positive squares in 4 ways, for example, as 5405625 + 10837264 = 2325^2 + 3292^2 .

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 16242889 - 2¹ = 16242887 is a prime.

It is a super-3 number, since 3×16242889³ (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 (16242881) 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, 16404 + ... + 17365.

It is an arithmetic number, because the mean of its divisors is an integer number (2245705).

Almost surely, 2^16242889 is an apocalyptic number.

It is an amenable number.

16242889 is a deficient number, since it is larger than the sum of its proper divisors (1722751).

16242889 is a wasteful number, since it uses less digits than its factorization.

16242889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33819.

The product of its digits is 55296, while the sum is 40.

The square root of 16242889 is about 4030.2467666385. The cubic root of 16242889 is about 253.2528990182.

The spelling of 16242889 in words is "sixteen million, two hundred forty-two thousand, eight hundred eighty-nine".