16972838 has 4 divisors (see below), whose sum is σ = 25459260. Its totient is φ = 8486418.

The previous prime is 16972829. The next prime is 16972847. The reversal of 16972838 is 83827961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83827961 = 7 ⋅11975423.

It is an interprime number because it is at equal distance from previous prime (16972829) and next prime (16972847).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4243208 + ... + 4243211.

It is an arithmetic number, because the mean of its divisors is an integer number (6364815).

Almost surely, 2^16972838 is an apocalyptic number.

16972838 is a deficient number, since it is larger than the sum of its proper divisors (8486422).

16972838 is an equidigital number, since it uses as much as digits as its factorization.

16972838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8486421.

The product of its digits is 145152, while the sum is 44.

The square root of 16972838 is about 4119.8104325321. The cubic root of 16972838 is about 256.9911426341.

The spelling of 16972838 in words is "sixteen million, nine hundred seventy-two thousand, eight hundred thirty-eight".