16972433 has 4 divisors (see below), whose sum is σ = 17013360. Its totient is φ = 16931508.

The previous prime is 16972429. The next prime is 16972463. The reversal of 16972433 is 33427961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33427961 = 7 ⋅4775423.

It is a cyclic number.

It is not a de Polignac number, because 16972433 - 2² = 16972429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16972393 and 16972402.

It is not an unprimeable number, because it can be changed into a prime (16972463) 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, 19835 + ... + 20672.

It is an arithmetic number, because the mean of its divisors is an integer number (4253340).

Almost surely, 2^16972433 is an apocalyptic number.

It is an amenable number.

16972433 is a deficient number, since it is larger than the sum of its proper divisors (40927).

16972433 is an equidigital number, since it uses as much as digits as its factorization.

16972433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40926.

The product of its digits is 27216, while the sum is 35.

The square root of 16972433 is about 4119.7612794918. The cubic root of 16972433 is about 256.9890985398.

The spelling of 16972433 in words is "sixteen million, nine hundred seventy-two thousand, four hundred thirty-three".