82778348 has 12 divisors (see below), whose sum is σ = 145142760. Its totient is φ = 41308992.

The previous prime is 82778347. The next prime is 82778363. The reversal of 82778348 is 84387728.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82778347) 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, 17693 + ... + 21876.

It is an arithmetic number, because the mean of its divisors is an integer number (12095230).

Almost surely, 2^82778348 is an apocalyptic number.

It is an amenable number.

82778348 is a deficient number, since it is larger than the sum of its proper divisors (62364412).

82778348 is a wasteful number, since it uses less digits than its factorization.

82778348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40096 (or 40094 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 82778348 is about 9098.2607129055. The cubic root of 82778348 is about 435.8184231143.

The spelling of 82778348 in words is "eighty-two million, seven hundred seventy-eight thousand, three hundred forty-eight".