16993936 has 10 divisors (see below), whose sum is σ = 32925782. Its totient is φ = 8496960.

The previous prime is 16993919. The next prime is 16993937. The reversal of 16993936 is 63939961.

It can be written as a sum of positive squares in only one way, i.e., 16353936 + 640000 = 4044^2 + 800^2 .

It is not an unprimeable number, because it can be changed into a prime (16993937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531045 + ... + 531076.

Almost surely, 2^16993936 is an apocalyptic number.

16993936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16993936 is a deficient number, since it is larger than the sum of its proper divisors (15931846).

16993936 is a wasteful number, since it uses less digits than its factorization.

16993936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062129 (or 1062123 counting only the distinct ones).

The product of its digits is 236196, while the sum is 46.

The square root of 16993936 is about 4122.3701920133. The cubic root of 16993936 is about 257.0975823876.

The spelling of 16993936 in words is "sixteen million, nine hundred ninety-three thousand, nine hundred thirty-six".