82815946 has 8 divisors (see below), whose sum is σ = 130762080. Its totient is φ = 39228588.

The previous prime is 82815923. The next prime is 82815947. The reversal of 82815946 is 64951828.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (82815947) 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, 1089646 + ... + 1089721.

It is an arithmetic number, because the mean of its divisors is an integer number (16345260).

Almost surely, 2^82815946 is an apocalyptic number.

82815946 is a deficient number, since it is larger than the sum of its proper divisors (47946134).

82815946 is a wasteful number, since it uses less digits than its factorization.

82815946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179388.

The product of its digits is 138240, while the sum is 43.

The square root of 82815946 is about 9100.3266974324. The cubic root of 82815946 is about 435.8843961667.

The spelling of 82815946 in words is "eighty-two million, eight hundred fifteen thousand, nine hundred forty-six".