83312340 has 96 divisors (see below), whose sum is σ = 248209920. Its totient is φ = 20820096.

The previous prime is 83312263. The next prime is 83312347. The reversal of 83312340 is 4321338.

It is a self number, because there is not a number n which added to its sum of digits gives 83312340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83312347) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 121639 + ... + 122321.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^83312340 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 83312340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124104960).

83312340 is an abundant number, since it is smaller than the sum of its proper divisors (164897580).

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

83312340 is a wasteful number, since it uses less digits than its factorization.

83312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 83312340 is about 9127.5593671036. The cubic root of 83312340 is about 436.7535505559.

Adding to 83312340 its reverse (4321338), we get a palindrome (87633678).

The spelling of 83312340 in words is "eighty-three million, three hundred twelve thousand, three hundred forty".