16428105 has 12 divisors (see below), whose sum is σ = 28475460. Its totient is φ = 8761632.

The previous prime is 16428091. The next prime is 16428119. The reversal of 16428105 is 50182461.

16428105 is a `hidden beast` number, since 1 + 642 + 8 + 10 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (16428091) and next prime (16428119).

It can be written as a sum of positive squares in 2 ways, for example, as 5774409 + 10653696 = 2403^2 + 3264^2 .

It is not a de Polignac number, because 16428105 - 2⁴ = 16428089 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 182490 + ... + 182579.

It is an arithmetic number, because the mean of its divisors is an integer number (2372955).

Almost surely, 2^16428105 is an apocalyptic number.

16428105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16428105 is a deficient number, since it is larger than the sum of its proper divisors (12047355).

16428105 is a wasteful number, since it uses less digits than its factorization.

16428105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365080 (or 365077 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 16428105 is about 4053.1598784159. The cubic root of 16428105 is about 254.2118688157.

The spelling of 16428105 in words is "sixteen million, four hundred twenty-eight thousand, one hundred five".