16428188 has 24 divisors (see below), whose sum is σ = 34790112. Its totient is φ = 6626304.

The previous prime is 16428173. The next prime is 16428197. The reversal of 16428188 is 88182461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16781 + ... + 17732.

It is an arithmetic number, because the mean of its divisors is an integer number (1449588).

Almost surely, 2^16428188 is an apocalyptic number.

It is an amenable number.

16428188 is an abundant number, since it is smaller than the sum of its proper divisors (18361924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16428188 is a wasteful number, since it uses less digits than its factorization.

16428188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34541 (or 34539 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 16428188 is about 4053.1701173279. The cubic root of 16428188 is about 254.2122969346.

The spelling of 16428188 in words is "sixteen million, four hundred twenty-eight thousand, one hundred eighty-eight".