16428129 has 8 divisors (see below), whose sum is σ = 22181760. Its totient is φ = 10813296.

The previous prime is 16428119. The next prime is 16428133. The reversal of 16428129 is 92182461.

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

It is not a de Polignac number, because 16428129 - 2¹² = 16424033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16428129.

It is not an unprimeable number, because it can be changed into a prime (16428119) 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, 34422 + ... + 34895.

It is an arithmetic number, because the mean of its divisors is an integer number (2772720).

Almost surely, 2^16428129 is an apocalyptic number.

It is an amenable number.

16428129 is a deficient number, since it is larger than the sum of its proper divisors (5753631).

16428129 is an equidigital number, since it uses as much as digits as its factorization.

16428129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69399.

The product of its digits is 6912, while the sum is 33.

The square root of 16428129 is about 4053.1628390678. The cubic root of 16428129 is about 254.2119926092.

The spelling of 16428129 in words is "sixteen million, four hundred twenty-eight thousand, one hundred twenty-nine".