16722290 has 32 divisors (see below), whose sum is σ = 32598720. Its totient is φ = 6139584.

The previous prime is 16722289. The next prime is 16722319. The reversal of 16722290 is 9222761.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39701 + ... + 40119.

It is an arithmetic number, because the mean of its divisors is an integer number (1018710).

Almost surely, 2^16722290 is an apocalyptic number.

16722290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16722290 is a deficient number, since it is larger than the sum of its proper divisors (15876430).

16722290 is a wasteful number, since it uses less digits than its factorization.

16722290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 16722290 is about 4089.2896693680. The cubic root of 16722290 is about 255.7203264924.

The spelling of 16722290 in words is "sixteen million, seven hundred twenty-two thousand, two hundred ninety".