16284789 has 6 divisors (see below), whose sum is σ = 23522486. Its totient is φ = 10856520.

The previous prime is 16284787. The next prime is 16284799. The reversal of 16284789 is 98748261.

It can be written as a sum of positive squares in only one way, i.e., 8749764 + 7535025 = 2958^2 + 2745^2 .

It is not a de Polignac number, because 16284789 - 2¹ = 16284787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16284787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 904702 + ... + 904719.

Almost surely, 2^16284789 is an apocalyptic number.

It is an amenable number.

16284789 is a deficient number, since it is larger than the sum of its proper divisors (7237697).

16284789 is a wasteful number, since it uses less digits than its factorization.

16284789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809427 (or 1809424 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 16284789 is about 4035.4416115216. The cubic root of 16284789 is about 253.4704749526.

The spelling of 16284789 in words is "sixteen million, two hundred eighty-four thousand, seven hundred eighty-nine".