16672128 has 64 divisors (see below), whose sum is σ = 48323520. Its totient is φ = 5050880.

The previous prime is 16672099. The next prime is 16672147. The reversal of 16672128 is 82127661.

16672128 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 tau number, because it is divible by the number of its divisors (64).

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

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, 2251 + ... + 6197.

It is an arithmetic number, because the mean of its divisors is an integer number (755055).

Almost surely, 2^16672128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16672128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24161760).

16672128 is an abundant number, since it is smaller than the sum of its proper divisors (31651392).

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

16672128 is a wasteful number, since it uses less digits than its factorization.

16672128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3963 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 16672128 is about 4083.1517238525. The cubic root of 16672128 is about 255.4643748926.

Adding to 16672128 its reverse (82127661), we get a palindrome (98799789).

The spelling of 16672128 in words is "sixteen million, six hundred seventy-two thousand, one hundred twenty-eight".