82347812 has 6 divisors (see below), whose sum is σ = 144108678. Its totient is φ = 41173904.

The previous prime is 82347809. The next prime is 82347817. The reversal of 82347812 is 21874328.

It can be written as a sum of positive squares in only one way, i.e., 58003456 + 24344356 = 7616^2 + 4934^2 .

It is not an unprimeable number, because it can be changed into a prime (82347817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10293473 + ... + 10293480.

It is an arithmetic number, because the mean of its divisors is an integer number (24018113).

Almost surely, 2^82347812 is an apocalyptic number.

It is an amenable number.

82347812 is a deficient number, since it is larger than the sum of its proper divisors (61760866).

82347812 is a wasteful number, since it uses less digits than its factorization.

82347812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20586957 (or 20586955 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 82347812 is about 9074.5695214704. The cubic root of 82347812 is about 435.0615353120.

The spelling of 82347812 in words is "eighty-two million, three hundred forty-seven thousand, eight hundred twelve".