16423128 has 64 divisors (see below), whose sum is σ = 46032000. Its totient is φ = 5425056.

The previous prime is 16423117. The next prime is 16423129. The reversal of 16423128 is 82132461.

16423128 is a `hidden beast` number, since 1 + 642 + 3 + 12 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16423129) 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 15 ways as a sum of consecutive naturals, for example, 29751 + ... + 30297.

It is an arithmetic number, because the mean of its divisors is an integer number (719250).

Almost surely, 2^16423128 is an apocalyptic number.

16423128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16423128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23016000).

16423128 is an abundant number, since it is smaller than the sum of its proper divisors (29608872).

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

16423128 is a wasteful number, since it uses less digits than its factorization.

16423128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 691 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 16423128 is about 4052.5458664894. The cubic root of 16423128 is about 254.1861945162.

Adding to 16423128 its reverse (82132461), we get a palindrome (98555589).

The spelling of 16423128 in words is "sixteen million, four hundred twenty-three thousand, one hundred twenty-eight".