82724473 has 4 divisors (see below), whose sum is σ = 89087908. Its totient is φ = 76361040.

The previous prime is 82724471. The next prime is 82724497. The reversal of 82724473 is 37442728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30769209 + 51955264 = 5547^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 82724473 - 2¹ = 82724471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82724471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181698 + ... + 3181723.

It is an arithmetic number, because the mean of its divisors is an integer number (22271977).

Almost surely, 2^82724473 is an apocalyptic number.

It is an amenable number.

82724473 is a deficient number, since it is larger than the sum of its proper divisors (6363435).

82724473 is a wasteful number, since it uses less digits than its factorization.

82724473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363434.

The product of its digits is 75264, while the sum is 37.

The square root of 82724473 is about 9095.2995002913. The cubic root of 82724473 is about 435.7238540482.

The spelling of 82724473 in words is "eighty-two million, seven hundred twenty-four thousand, four hundred seventy-three".