82727978 has 8 divisors (see below), whose sum is σ = 125190468. Its totient is φ = 40997824.

The previous prime is 82727963. The next prime is 82727999. The reversal of 82727978 is 87972728.

It can be written as a sum of positive squares in 2 ways, for example, as 78092569 + 4635409 = 8837^2 + 2153^2 .

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

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, 182801 + ... + 183252.

Almost surely, 2^82727978 is an apocalyptic number.

82727978 is a deficient number, since it is larger than the sum of its proper divisors (42462490).

82727978 is a wasteful number, since it uses less digits than its factorization.

82727978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366168.

The product of its digits is 790272, while the sum is 50.

The square root of 82727978 is about 9095.4921801956. The cubic root of 82727978 is about 435.7300077715.

The spelling of 82727978 in words is "eighty-two million, seven hundred twenty-seven thousand, nine hundred seventy-eight".