16972426 has 8 divisors (see below), whose sum is σ = 26956260. Its totient is φ = 7987008.

The previous prime is 16972391. The next prime is 16972429. The reversal of 16972426 is 62427961.

It can be written as a sum of positive squares in 2 ways, for example, as 16769025 + 203401 = 4095^2 + 451^2 .

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 (16972429) 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 3 ways as a sum of consecutive naturals, for example, 249561 + ... + 249628.

Almost surely, 2^16972426 is an apocalyptic number.

16972426 is a deficient number, since it is larger than the sum of its proper divisors (9983834).

16972426 is a wasteful number, since it uses less digits than its factorization.

16972426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499208.

The product of its digits is 36288, while the sum is 37.

The square root of 16972426 is about 4119.7604299279. The cubic root of 16972426 is about 256.9890632095.

The spelling of 16972426 in words is "sixteen million, nine hundred seventy-two thousand, four hundred twenty-six".