16728426 has 96 divisors (see below), whose sum is σ = 43662528. Its totient is φ = 4561920.

The previous prime is 16728421. The next prime is 16728427. The reversal of 16728426 is 62482761.

It is not an unprimeable number, because it can be changed into a prime (16728421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172410 + ... + 172506.

It is an arithmetic number, because the mean of its divisors is an integer number (454818).

Almost surely, 2^16728426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16728426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21831264).

16728426 is an abundant number, since it is smaller than the sum of its proper divisors (26934102).

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

16728426 is a wasteful number, since it uses less digits than its factorization.

16728426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 193 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 16728426 is about 4090.0398531066. The cubic root of 16728426 is about 255.7516002801.

The spelling of 16728426 in words is "sixteen million, seven hundred twenty-eight thousand, four hundred twenty-six".