16461328 has 40 divisors (see below), whose sum is σ = 35544600. Its totient is φ = 7332864.

The previous prime is 16461317. The next prime is 16461331. The reversal of 16461328 is 82316461.

It is a happy number.

16461328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3873024 + 12588304 = 1968^2 + 3548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16461328.

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, 4668 + ... + 7396.

It is an arithmetic number, because the mean of its divisors is an integer number (888615).

Almost surely, 2^16461328 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 16461328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17772300).

16461328 is an abundant number, since it is smaller than the sum of its proper divisors (19083272).

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

16461328 is a wasteful number, since it uses less digits than its factorization.

16461328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779 (or 2773 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 16461328 is about 4057.2562157202. The cubic root of 16461328 is about 254.3831199327.

Adding to 16461328 its reverse (82316461), we get a palindrome (98777789).

The spelling of 16461328 in words is "sixteen million, four hundred sixty-one thousand, three hundred twenty-eight".