82727878 has 4 divisors (see below), whose sum is σ = 124091820. Its totient is φ = 41363938.

The previous prime is 82727867. The next prime is 82727921. The reversal of 82727878 is 87872728.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20681968 + ... + 20681971.

It is an arithmetic number, because the mean of its divisors is an integer number (31022955).

Almost surely, 2^82727878 is an apocalyptic number.

82727878 is a deficient number, since it is larger than the sum of its proper divisors (41363942).

82727878 is a wasteful number, since it uses less digits than its factorization.

82727878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41363941.

The product of its digits is 702464, while the sum is 49.

The square root of 82727878 is about 9095.4866829653. The cubic root of 82727878 is about 435.7298322040.

The spelling of 82727878 in words is "eighty-two million, seven hundred twenty-seven thousand, eight hundred seventy-eight".