82174812 has 24 divisors (see below), whose sum is σ = 193642512. Its totient is φ = 27120000.

The previous prime is 82174793. The next prime is 82174819. The reversal of 82174812 is 21847128.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82174819) 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, 32689 + ... + 35112.

It is an arithmetic number, because the mean of its divisors is an integer number (8068438).

Almost surely, 2^82174812 is an apocalyptic number.

It is an amenable number.

82174812 is an abundant number, since it is smaller than the sum of its proper divisors (111467700).

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

82174812 is a wasteful number, since it uses less digits than its factorization.

82174812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67909 (or 67907 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 82174812 is about 9065.0323772174. The cubic root of 82174812 is about 434.7566560747.

The spelling of 82174812 in words is "eighty-two million, one hundred seventy-four thousand, eight hundred twelve".