16993882 has 4 divisors (see below), whose sum is σ = 25490826. Its totient is φ = 8496940.

The previous prime is 16993877. The next prime is 16993903. The reversal of 16993882 is 28839961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28839961 = 367 ⋅78583.

It can be written as a sum of positive squares in only one way, i.e., 15673681 + 1320201 = 3959^2 + 1149^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4248469 + ... + 4248472.

Almost surely, 2^16993882 is an apocalyptic number.

16993882 is a deficient number, since it is larger than the sum of its proper divisors (8496944).

16993882 is an equidigital number, since it uses as much as digits as its factorization.

16993882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496943.

The product of its digits is 186624, while the sum is 46.

The square root of 16993882 is about 4122.3636423780. The cubic root of 16993882 is about 257.0973100692.

The spelling of 16993882 in words is "sixteen million, nine hundred ninety-three thousand, eight hundred eighty-two".