16722013 has 8 divisors (see below), whose sum is σ = 20848320. Its totient is φ = 13030080.

The previous prime is 16721993. The next prime is 16722023. The reversal of 16722013 is 31022761.

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

It is not a de Polignac number, because 16722013 - 2⁵ = 16721981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16722023) 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, 108508 + ... + 108661.

It is an arithmetic number, because the mean of its divisors is an integer number (2606040).

Almost surely, 2^16722013 is an apocalyptic number.

It is an amenable number.

16722013 is a deficient number, since it is larger than the sum of its proper divisors (4126307).

16722013 is a wasteful number, since it uses less digits than its factorization.

16722013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217187.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 16722013 is about 4089.2558002649. The cubic root of 16722013 is about 255.7189145063.

Adding to 16722013 its reverse (31022761), we get a palindrome (47744774).

The spelling of 16722013 in words is "sixteen million, seven hundred twenty-two thousand, thirteen".