16973428 has 6 divisors (see below), whose sum is σ = 29703506. Its totient is φ = 8486712.

The previous prime is 16973413. The next prime is 16973431. The reversal of 16973428 is 82437961.

It can be written as a sum of positive squares in only one way, i.e., 14577124 + 2396304 = 3818^2 + 1548^2 .

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 as a sum of consecutive naturals, namely, 2121675 + ... + 2121682.

Almost surely, 2^16973428 is an apocalyptic number.

It is an amenable number.

16973428 is a deficient number, since it is larger than the sum of its proper divisors (12730078).

16973428 is a wasteful number, since it uses less digits than its factorization.

16973428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243361 (or 4243359 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 16973428 is about 4119.8820371462. The cubic root of 16973428 is about 256.9941203922.

The spelling of 16973428 in words is "sixteen million, nine hundred seventy-three thousand, four hundred twenty-eight".