82931512 has 8 divisors (see below), whose sum is σ = 155496600. Its totient is φ = 41465752.

The previous prime is 82931509. The next prime is 82931531. The reversal of 82931512 is 21513928.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×82931512² = 13755271365212288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5183212 + ... + 5183227.

It is an arithmetic number, because the mean of its divisors is an integer number (19437075).

Almost surely, 2^82931512 is an apocalyptic number.

It is an amenable number.

82931512 is a deficient number, since it is larger than the sum of its proper divisors (72565088).

82931512 is a wasteful number, since it uses less digits than its factorization.

82931512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10366445 (or 10366441 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 82931512 is about 9106.6740361122. The cubic root of 82931512 is about 436.0870544123.

The spelling of 82931512 in words is "eighty-two million, nine hundred thirty-one thousand, five hundred twelve".