82771394 has 8 divisors (see below), whose sum is σ = 128438460. Its totient is φ = 39958576.

The previous prime is 82771393. The next prime is 82771397. The reversal of 82771394 is 49317728.

It can be written as a sum of positive squares in 2 ways, for example, as 72880369 + 9891025 = 8537^2 + 3145^2 .

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

It is a super-2 number, since 2×82771394² = 13702207329406472, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713489 + ... + 713604.

Almost surely, 2^82771394 is an apocalyptic number.

82771394 is a deficient number, since it is larger than the sum of its proper divisors (45667066).

82771394 is a wasteful number, since it uses less digits than its factorization.

82771394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427124.

The product of its digits is 84672, while the sum is 41.

The square root of 82771394 is about 9097.8785439244. The cubic root of 82771394 is about 435.8062187708.

The spelling of 82771394 in words is "eighty-two million, seven hundred seventy-one thousand, three hundred ninety-four".