16973638 has 12 divisors (see below), whose sum is σ = 27985860. Its totient is φ = 7715180.

The previous prime is 16973611. The next prime is 16973653. The reversal of 16973638 is 83637961.

It is a junction number, because it is equal to n+sod(n) for n = 16973594 and 16973603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34828 + ... + 35311.

It is an arithmetic number, because the mean of its divisors is an integer number (2332155).

Almost surely, 2^16973638 is an apocalyptic number.

16973638 is a deficient number, since it is larger than the sum of its proper divisors (11012222).

16973638 is a wasteful number, since it uses less digits than its factorization.

16973638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70163 (or 70152 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 16973638 is about 4119.9075232340. The cubic root of 16973638 is about 256.9951802555.

It can be divided in two parts, 1697 and 3638, that added together give a palindrome (5335).

The spelling of 16973638 in words is "sixteen million, nine hundred seventy-three thousand, six hundred thirty-eight".