16993371 has 8 divisors (see below), whose sum is σ = 22732864. Its totient is φ = 11291400.

The previous prime is 16993369. The next prime is 16993373. The reversal of 16993371 is 17339961.

It is an interprime number because it is at equal distance from previous prime (16993369) and next prime (16993373).

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

It is not a de Polignac number, because 16993371 - 2¹ = 16993369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16993373) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8305 + ... + 10146.

It is an arithmetic number, because the mean of its divisors is an integer number (2841608).

Almost surely, 2^16993371 is an apocalyptic number.

16993371 is a deficient number, since it is larger than the sum of its proper divisors (5739493).

16993371 is a wasteful number, since it uses less digits than its factorization.

16993371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18761.

The product of its digits is 30618, while the sum is 39.

The square root of 16993371 is about 4122.3016629063. The cubic root of 16993371 is about 257.0947331018.

The spelling of 16993371 in words is "sixteen million, nine hundred ninety-three thousand, three hundred seventy-one".