16991962 has 8 divisors (see below), whose sum is σ = 27448596. Its totient is φ = 7842432.

The previous prime is 16991951. The next prime is 16992007. The reversal of 16991962 is 26919961.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 4888521 = 3479^2 + 2211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 326743 + ... + 326794.

Almost surely, 2^16991962 is an apocalyptic number.

16991962 is a deficient number, since it is larger than the sum of its proper divisors (10456634).

16991962 is a wasteful number, since it uses less digits than its factorization.

16991962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653552.

The product of its digits is 52488, while the sum is 43.

The square root of 16991962 is about 4122.1307596921. The cubic root of 16991962 is about 257.0876272625.

The spelling of 16991962 in words is "sixteen million, nine hundred ninety-one thousand, nine hundred sixty-two".