16323520 has 56 divisors (see below), whose sum is σ = 40233600. Its totient is φ = 6300672.

The previous prime is 16323509. The next prime is 16323529. The reversal of 16323520 is 2532361.

It is a junction number, because it is equal to n+sod(n) for n = 16323491 and 16323500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16323529) by changing a digit.

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, 8401 + ... + 10159.

Almost surely, 2^16323520 is an apocalyptic number.

16323520 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 16323520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20116800).

16323520 is an abundant number, since it is smaller than the sum of its proper divisors (23910080).

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

16323520 is a wasteful number, since it uses less digits than its factorization.

16323520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 16323520 is about 4040.2376167745. The cubic root of 16323520 is about 253.6712633967.

Adding to 16323520 its reverse (2532361), we get a palindrome (18855881).

The spelling of 16323520 in words is "sixteen million, three hundred twenty-three thousand, five hundred twenty".