16938916 has 24 divisors (see below), whose sum is σ = 30252600. Its totient is φ = 8297472.

The previous prime is 16938893. The next prime is 16938917. The reversal of 16938916 is 61983961.

It can be written as a sum of positive squares in 4 ways, for example, as 2876416 + 14062500 = 1696^2 + 3750^2 .

It is not an unprimeable number, because it can be changed into a prime (16938917) 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, 57666 + ... + 57958.

It is an arithmetic number, because the mean of its divisors is an integer number (1260525).

Almost surely, 2^16938916 is an apocalyptic number.

It is an amenable number.

16938916 is a deficient number, since it is larger than the sum of its proper divisors (13313684).

16938916 is a wasteful number, since it uses less digits than its factorization.

16938916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 541 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 16938916 is about 4115.6914364418. The cubic root of 16938916 is about 256.8198205151.

It can be divided in two parts, 1693 and 8916, that added together give a square (10609 = 103²).

The spelling of 16938916 in words is "sixteen million, nine hundred thirty-eight thousand, nine hundred sixteen".