16428903 has 16 divisors (see below), whose sum is σ = 22415616. Its totient is φ = 10700480.

The previous prime is 16428871. The next prime is 16428913. The reversal of 16428903 is 30982461.

It is a cyclic number.

It is not a de Polignac number, because 16428903 - 2⁵ = 16428871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28900 + ... + 29462.

It is an arithmetic number, because the mean of its divisors is an integer number (1400976).

Almost surely, 2^16428903 is an apocalyptic number.

16428903 is a deficient number, since it is larger than the sum of its proper divisors (5986713).

16428903 is a wasteful number, since it uses less digits than its factorization.

16428903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 16428903 is about 4053.2583189331. The cubic root of 16428903 is about 254.2159848876.

The spelling of 16428903 in words is "sixteen million, four hundred twenty-eight thousand, nine hundred three".