16991082 has 24 divisors (see below), whose sum is σ = 37084320. Its totient is φ = 5622120.

The previous prime is 16991057. The next prime is 16991099. The reversal of 16991082 is 28019961.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 894 + ... + 5897.

It is an arithmetic number, because the mean of its divisors is an integer number (1545180).

Almost surely, 2^16991082 is an apocalyptic number.

16991082 is an abundant number, since it is smaller than the sum of its proper divisors (20093238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16991082 is a wasteful number, since it uses less digits than its factorization.

16991082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938 (or 6935 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 16991082 is about 4122.0240173973. The cubic root of 16991082 is about 257.0831890656.

The spelling of 16991082 in words is "sixteen million, nine hundred ninety-one thousand, eighty-two".