16620032 has 80 divisors (see below), whose sum is σ = 39184992. Its totient is φ = 6942720.

The previous prime is 16620017. The next prime is 16620049. The reversal of 16620032 is 23002661.

It is a junction number, because it is equal to n+sod(n) for n = 16619986 and 16620013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73103 + ... + 73329.

Almost surely, 2^16620032 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 16620032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19592496).

16620032 is an abundant number, since it is smaller than the sum of its proper divisors (22564960).

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

16620032 is a wasteful number, since it uses less digits than its factorization.

16620032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 16620032 is about 4076.7673468080. The cubic root of 16620032 is about 255.1980110103.

Adding to 16620032 its reverse (23002661), we get a palindrome (39622693).

The spelling of 16620032 in words is "sixteen million, six hundred twenty thousand, thirty-two".