16128432 has 60 divisors (see below), whose sum is σ = 46606144. Its totient is φ = 5201280.

The previous prime is 16128419. The next prime is 16128439. The reversal of 16128432 is 23482161.

16128432 is a `hidden beast` number, since 1 + 612 + 8 + 43 + 2 = 666.

16128432 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 16128396 and 16128405.

It is not an unprimeable number, because it can be changed into a prime (16128439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2658 + ... + 6270.

Almost surely, 2^16128432 is an apocalyptic number.

16128432 is a gapful number since it is divisible by the number (12) 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 16128432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23303072).

16128432 is an abundant number, since it is smaller than the sum of its proper divisors (30477712).

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

16128432 is a wasteful number, since it uses less digits than its factorization.

16128432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3649 counting only the distinct ones).

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

The square root of 16128432 is about 4016.0219122908. The cubic root of 16128432 is about 252.6566397288.

The spelling of 16128432 in words is "sixteen million, one hundred twenty-eight thousand, four hundred thirty-two".