16432506 has 48 divisors (see below), whose sum is σ = 38211264. Its totient is φ = 5085312.

The previous prime is 16432501. The next prime is 16432529. The reversal of 16432506 is 60523461.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16432506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16432501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25075 + ... + 25721.

It is an arithmetic number, because the mean of its divisors is an integer number (796068).

Almost surely, 2^16432506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16432506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19105632).

16432506 is an abundant number, since it is smaller than the sum of its proper divisors (21778758).

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

16432506 is a wasteful number, since it uses less digits than its factorization.

16432506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 16432506 is about 4053.7027518061. The cubic root of 16432506 is about 254.2345674479.

Adding to 16432506 its reverse (60523461), we get a palindrome (76955967).

The spelling of 16432506 in words is "sixteen million, four hundred thirty-two thousand, five hundred six".