16623040 has 112 divisors (see below), whose sum is σ = 46597824. Its totient is φ = 5529600.

The previous prime is 16623031. The next prime is 16623071. The reversal of 16623040 is 4032661.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91750 + ... + 91930.

It is an arithmetic number, because the mean of its divisors is an integer number (416052).

Almost surely, 2^16623040 is an apocalyptic number.

16623040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16623040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23298912).

16623040 is an abundant number, since it is smaller than the sum of its proper divisors (29974784).

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

16623040 is a wasteful number, since it uses less digits than its factorization.

16623040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 16623040 is about 4077.1362498695. The cubic root of 16623040 is about 255.2134058726.

The spelling of 16623040 in words is "sixteen million, six hundred twenty-three thousand, forty".