16821092 has 12 divisors (see below), whose sum is σ = 31168620. Its totient is φ = 7915776.

The previous prime is 16821083. The next prime is 16821121. The reversal of 16821092 is 29012861.

It can be written as a sum of positive squares in 2 ways, for example, as 4946176 + 11874916 = 2224^2 + 3446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123617 + ... + 123752.

It is an arithmetic number, because the mean of its divisors is an integer number (2597385).

Almost surely, 2^16821092 is an apocalyptic number.

It is an amenable number.

16821092 is a deficient number, since it is larger than the sum of its proper divisors (14347528).

16821092 is a wasteful number, since it uses less digits than its factorization.

16821092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247390 (or 247388 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16821092 is about 4101.3524598600. The cubic root of 16821092 is about 256.2229706172. Note that the first 3 decimals are identical.

The spelling of 16821092 in words is "sixteen million, eight hundred twenty-one thousand, ninety-two".