16128816 has 60 divisors (see below), whose sum is σ = 45814776. Its totient is φ = 4885760.

The previous prime is 16128799. The next prime is 16128821. The reversal of 16128816 is 61882161.

16128816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4420 + ... + 7196.

Almost surely, 2^16128816 is an apocalyptic number.

16128816 is a gapful number since it is divisible by the number (16) 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 16128816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22907388).

16128816 is an abundant number, since it is smaller than the sum of its proper divisors (29685960).

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

16128816 is a wasteful number, since it uses less digits than its factorization.

16128816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810 (or 2793 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 16128816 is about 4016.0697205103. The cubic root of 16128816 is about 252.6586448706.

The spelling of 16128816 in words is "sixteen million, one hundred twenty-eight thousand, eight hundred sixteen".