82311740 has 48 divisors (see below), whose sum is σ = 198815232. Its totient is φ = 28040256.

The previous prime is 82311737. The next prime is 82311751. The reversal of 82311740 is 4711328.

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 15 ways as a sum of consecutive naturals, for example, 21017 + ... + 24623.

It is an arithmetic number, because the mean of its divisors is an integer number (4141984).

Almost surely, 2^82311740 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 82311740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99407616).

82311740 is an abundant number, since it is smaller than the sum of its proper divisors (116503492).

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

82311740 is a wasteful number, since it uses less digits than its factorization.

82311740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786 (or 3784 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 82311740 is about 9072.5817714695. The cubic root of 82311740 is about 434.9980006074.

The spelling of 82311740 in words is "eighty-two million, three hundred eleven thousand, seven hundred forty".