16722315 has 32 divisors (see below), whose sum is σ = 30058560. Its totient is φ = 8819712.

The previous prime is 16722289. The next prime is 16722319. The reversal of 16722315 is 51322761.

It is a happy number.

It is not a de Polignac number, because 16722315 - 2⁸ = 16722059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16722319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12457 + ... + 13733.

It is an arithmetic number, because the mean of its divisors is an integer number (939330).

Almost surely, 2^16722315 is an apocalyptic number.

16722315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16722315 is a deficient number, since it is larger than the sum of its proper divisors (13336245).

16722315 is a wasteful number, since it uses less digits than its factorization.

16722315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 16722315 is about 4089.2927261325. The cubic root of 16722315 is about 255.7204539272.

The spelling of 16722315 in words is "sixteen million, seven hundred twenty-two thousand, three hundred fifteen".