16425728 has 72 divisors (see below), whose sum is σ = 37773120. Its totient is φ = 7050240.

The previous prime is 16425713. The next prime is 16425737. The reversal of 16425728 is 82752461.

It is a nialpdrome in base 16.

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, 53351 + ... + 53657.

Almost surely, 2^16425728 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 16425728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18886560).

16425728 is an abundant number, since it is smaller than the sum of its proper divisors (21347392).

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

16425728 is a wasteful number, since it uses less digits than its factorization.

16425728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 339 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 16425728 is about 4052.8666397995. The cubic root of 16425728 is about 254.1996074956.

The spelling of 16425728 in words is "sixteen million, four hundred twenty-five thousand, seven hundred twenty-eight".