16881922 has 4 divisors (see below), whose sum is σ = 25322886. Its totient is φ = 8440960.

The previous prime is 16881913. The next prime is 16881941. The reversal of 16881922 is 22918861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8696601 + 8185321 = 2949^2 + 2861^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220479 + ... + 4220482.

Almost surely, 2^16881922 is an apocalyptic number.

16881922 is a deficient number, since it is larger than the sum of its proper divisors (8440964).

16881922 is an equidigital number, since it uses as much as digits as its factorization.

16881922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8440963.

The product of its digits is 13824, while the sum is 37.

The square root of 16881922 is about 4108.7616139173. The cubic root of 16881922 is about 256.5314581807.

The spelling of 16881922 in words is "sixteen million, eight hundred eighty-one thousand, nine hundred twenty-two".