82512612 has 144 divisors (see below), whose sum is σ = 260507520. Its totient is φ = 21441024.

The previous prime is 82512601. The next prime is 82512629. The reversal of 82512612 is 21621528.

It is a happy number.

It is a super-2 number, since 2×82512612² = 13616662278125088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 291423 + ... + 291705.

It is an arithmetic number, because the mean of its divisors is an integer number (1809080).

Almost surely, 2^82512612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82512612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130253760).

82512612 is an abundant number, since it is smaller than the sum of its proper divisors (177994908).

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

82512612 is a wasteful number, since it uses less digits than its factorization.

82512612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 397 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 82512612 is about 9083.6453035111. The cubic root of 82512612 is about 435.3515667585.

The spelling of 82512612 in words is "eighty-two million, five hundred twelve thousand, six hundred twelve".