82457272 has 16 divisors (see below), whose sum is σ = 159595200. Its totient is φ = 39898560.

The previous prime is 82457269. The next prime is 82457281. The reversal of 82457272 is 27275428.

It is a congruent number.

It is an unprimeable number.

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, 165997 + ... + 166492.

It is an arithmetic number, because the mean of its divisors is an integer number (9974700).

Almost surely, 2^82457272 is an apocalyptic number.

It is an amenable number.

82457272 is a deficient number, since it is larger than the sum of its proper divisors (77137928).

82457272 is a wasteful number, since it uses less digits than its factorization.

82457272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332526 (or 332522 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 82457272 is about 9080.5986586788. The cubic root of 82457272 is about 435.2542170190.

The spelling of 82457272 in words is "eighty-two million, four hundred fifty-seven thousand, two hundred seventy-two".