16428573 has 18 divisors (see below), whose sum is σ = 27605214. Its totient is φ = 9387504.

The previous prime is 16428563. The next prime is 16428583. The reversal of 16428573 is 37582461.

16428573 is a `hidden beast` number, since 1 + 64 + 28 + 573 = 666.

It is an interprime number because it is at equal distance from previous prime (16428563) and next prime (16428583).

It can be written as a sum of positive squares in only one way, i.e., 16426809 + 1764 = 4053^2 + 42^2 .

It is not a de Polignac number, because 16428573 - 2⁴ = 16428557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428553) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18186 + ... + 19067.

It is an arithmetic number, because the mean of its divisors is an integer number (1533623).

Almost surely, 2^16428573 is an apocalyptic number.

It is an amenable number.

16428573 is a deficient number, since it is larger than the sum of its proper divisors (11176641).

16428573 is a wasteful number, since it uses less digits than its factorization.

16428573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37273 (or 37263 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 16428573 is about 4053.2176107384. The cubic root of 16428573 is about 254.2142827688.

The spelling of 16428573 in words is "sixteen million, four hundred twenty-eight thousand, five hundred seventy-three".