16204489 has 8 divisors (see below), whose sum is σ = 19324800. Its totient is φ = 13285536.

The previous prime is 16204477. The next prime is 16204493. The reversal of 16204489 is 98440261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16204489 - 2⁵ = 16204457 is a prime.

It is a super-2 number, since 2×16204489² = 525170927502242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16204429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50164 + ... + 50485.

It is an arithmetic number, because the mean of its divisors is an integer number (2415600).

Almost surely, 2^16204489 is an apocalyptic number.

It is an amenable number.

16204489 is a deficient number, since it is larger than the sum of its proper divisors (3120311).

16204489 is a wasteful number, since it uses less digits than its factorization.

16204489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100679.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 16204489 is about 4025.4799713823. The cubic root of 16204489 is about 253.0531688472.

The spelling of 16204489 in words is "sixteen million, two hundred four thousand, four hundred eighty-nine".