16772473 has 4 divisors (see below), whose sum is σ = 16782948. Its totient is φ = 16762000.

The previous prime is 16772471. The next prime is 16772491. The reversal of 16772473 is 37427761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2393209 + 14379264 = 1547^2 + 3792^2 .

It is a cyclic number.

It is not a de Polignac number, because 16772473 - 2¹ = 16772471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16772471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278 + ... + 6223.

It is an arithmetic number, because the mean of its divisors is an integer number (4195737).

Almost surely, 2^16772473 is an apocalyptic number.

It is an amenable number.

16772473 is a deficient number, since it is larger than the sum of its proper divisors (10475).

16772473 is an equidigital number, since it uses as much as digits as its factorization.

16772473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474.

The product of its digits is 49392, while the sum is 37.

The square root of 16772473 is about 4095.4209795820. The cubic root of 16772473 is about 255.9758735808.

The spelling of 16772473 in words is "sixteen million, seven hundred seventy-two thousand, four hundred seventy-three".