16573040 has 80 divisors (see below), whose sum is σ = 43256160. Its totient is φ = 5852160.

The previous prime is 16573013. The next prime is 16573049. The reversal of 16573040 is 4037561.

It is a Cunningham number, because it is equal to 4071²-1.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16573049) by changing a digit.

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, 32306 + ... + 32814.

It is an arithmetic number, because the mean of its divisors is an integer number (540702).

Almost surely, 2^16573040 is an apocalyptic number.

16573040 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 16573040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21628080).

16573040 is an abundant number, since it is smaller than the sum of its proper divisors (26683120).

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

16573040 is a wasteful number, since it uses less digits than its factorization.

16573040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 16573040 is about 4070.9998771801. Note that the first 3 decimals coincide. The cubic root of 16573040 is about 254.9572656825.

The spelling of 16573040 in words is "sixteen million, five hundred seventy-three thousand, forty".