16722396 has 48 divisors (see below), whose sum is σ = 44020480. Its totient is φ = 5488560.

The previous prime is 16722371. The next prime is 16722397. The reversal of 16722396 is 69322761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16722396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16722397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6081 + ... + 8391.

Almost surely, 2^16722396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16722396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22010240).

16722396 is an abundant number, since it is smaller than the sum of its proper divisors (27298084).

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

16722396 is a wasteful number, since it uses less digits than its factorization.

16722396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391 (or 2383 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 16722396 is about 4089.3026300336. The cubic root of 16722396 is about 255.7208668150.

The spelling of 16722396 in words is "sixteen million, seven hundred twenty-two thousand, three hundred ninety-six".