16280389 has 8 divisors (see below), whose sum is σ = 17078400. Its totient is φ = 15489936.

The previous prime is 16280353. The next prime is 16280393. The reversal of 16280389 is 98308261.

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 16280389 - 2¹¹ = 16278341 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 (16280309) 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, 2799 + ... + 6355.

It is an arithmetic number, because the mean of its divisors is an integer number (2134800).

Almost surely, 2^16280389 is an apocalyptic number.

It is an amenable number.

16280389 is a deficient number, since it is larger than the sum of its proper divisors (798011).

16280389 is a wasteful number, since it uses less digits than its factorization.

16280389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 16280389 is about 4034.8964051138. The cubic root of 16280389 is about 253.4476444337.

The spelling of 16280389 in words is "sixteen million, two hundred eighty thousand, three hundred eighty-nine".