82723442 has 8 divisors (see below), whose sum is σ = 126119532. Its totient is φ = 40683600.

The previous prime is 82723441. The next prime is 82723463. The reversal of 82723442 is 24432728.

It can be written as a sum of positive squares in 2 ways, for example, as 70744921 + 11978521 = 8411^2 + 3461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 82723399 and 82723408.

It is not an unprimeable number, because it can be changed into a prime (82723441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338909 + ... + 339152.

Almost surely, 2^82723442 is an apocalyptic number.

82723442 is a deficient number, since it is larger than the sum of its proper divisors (43396090).

82723442 is a wasteful number, since it uses less digits than its factorization.

82723442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678124.

The product of its digits is 21504, while the sum is 32.

The square root of 82723442 is about 9095.2428224869. The cubic root of 82723442 is about 435.7220438900.

The spelling of 82723442 in words is "eighty-two million, seven hundred twenty-three thousand, four hundred forty-two".