16257089 has 4 divisors (see below), whose sum is σ = 16267440. Its totient is φ = 16246740.

The previous prime is 16257079. The next prime is 16257091. The reversal of 16257089 is 98075261.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16257089 - 2⁸ = 16256833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16257029) 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, 2279 + ... + 6140.

It is an arithmetic number, because the mean of its divisors is an integer number (4066860).

Almost surely, 2^16257089 is an apocalyptic number.

It is an amenable number.

16257089 is a deficient number, since it is larger than the sum of its proper divisors (10351).

16257089 is an equidigital number, since it uses as much as digits as its factorization.

16257089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10350.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 16257089 is about 4032.0080605078. The cubic root of 16257089 is about 253.3266778415.

The spelling of 16257089 in words is "sixteen million, two hundred fifty-seven thousand, eighty-nine".