82771392 has 56 divisors (see below), whose sum is σ = 238914432. Its totient is φ = 25081600.

The previous prime is 82771387. The next prime is 82771393. The reversal of 82771392 is 29317728.

It is a super-3 number, since 3×82771392³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 82771392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82771393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17484 + ... + 21707.

Almost surely, 2^82771392 is an apocalyptic number.

It is an amenable number.

82771392 is an abundant number, since it is smaller than the sum of its proper divisors (156143040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82771392 is a wasteful number, since it uses less digits than its factorization.

82771392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39217 (or 39207 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 82771392 is about 9097.8784340087. The cubic root of 82771392 is about 435.8062152607.

It can be divided in two parts, 8277 and 1392, that added together give a palindrome (9669).

The spelling of 82771392 in words is "eighty-two million, seven hundred seventy-one thousand, three hundred ninety-two".