82180274 has 16 divisors (see below), whose sum is σ = 136758240. Its totient is φ = 36720960.

The previous prime is 82180271. The next prime is 82180279. The reversal of 82180274 is 47208128.

It is a self number, because there is not a number n which added to its sum of digits gives 82180274.

It is not an unprimeable number, because it can be changed into a prime (82180271) 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, 30359 + ... + 32954.

It is an arithmetic number, because the mean of its divisors is an integer number (8547390).

Almost surely, 2^82180274 is an apocalyptic number.

82180274 is a deficient number, since it is larger than the sum of its proper divisors (54577966).

82180274 is a wasteful number, since it uses less digits than its factorization.

82180274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63385.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 82180274 is about 9065.3336397509. Note that the first 3 decimals coincide. The cubic root of 82180274 is about 434.7662883378.

The spelling of 82180274 in words is "eighty-two million, one hundred eighty thousand, two hundred seventy-four".