82243512 has 120 divisors (see below), whose sum is σ = 249773040. Its totient is φ = 25272000.

The previous prime is 82243471. The next prime is 82243529. The reversal of 82243512 is 21534228.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 109137 + ... + 109887.

It is an arithmetic number, because the mean of its divisors is an integer number (2081442).

Almost surely, 2^82243512 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 82243512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124886520).

82243512 is an abundant number, since it is smaller than the sum of its proper divisors (167529528).

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

82243512 is a wasteful number, since it uses less digits than its factorization.

82243512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 769 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 82243512 is about 9068.8208715356. The cubic root of 82243512 is about 434.8777777908.

The spelling of 82243512 in words is "eighty-two million, two hundred forty-three thousand, five hundred twelve".