16720323 has 8 divisors (see below), whose sum is σ = 23467200. Its totient is φ = 10560168.

The previous prime is 16720321. The next prime is 16720349. The reversal of 16720323 is 32302761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16720323 - 2¹ = 16720321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16720293 and 16720302.

It is not an unprimeable number, because it can be changed into a prime (16720321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146613 + ... + 146726.

It is an arithmetic number, because the mean of its divisors is an integer number (2933400).

Almost surely, 2^16720323 is an apocalyptic number.

16720323 is a deficient number, since it is larger than the sum of its proper divisors (6746877).

16720323 is a wasteful number, since it uses less digits than its factorization.

16720323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293361.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 16720323 is about 4089.0491559775. The cubic root of 16720323 is about 255.7102995243.

The spelling of 16720323 in words is "sixteen million, seven hundred twenty thousand, three hundred twenty-three".