16728274 has 8 divisors (see below), whose sum is σ = 25503948. Its totient is φ = 8226960.

The previous prime is 16728263. The next prime is 16728277. The reversal of 16728274 is 47282761.

It can be written as a sum of positive squares in 2 ways, for example, as 14493249 + 2235025 = 3807^2 + 1495^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16728277) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 68437 + ... + 68680.

Almost surely, 2^16728274 is an apocalyptic number.

16728274 is a deficient number, since it is larger than the sum of its proper divisors (8775674).

16728274 is a wasteful number, since it uses less digits than its factorization.

16728274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137180.

The product of its digits is 37632, while the sum is 37.

The square root of 16728274 is about 4090.0212713383. The cubic root of 16728274 is about 255.7508256633.

It can be divided in two parts, 167 and 28274, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 16728274 in words is "sixteen million, seven hundred twenty-eight thousand, two hundred seventy-four".