82040388 has 24 divisors (see below), whose sum is σ = 195880608. Its totient is φ = 26710656.

The previous prime is 82040363. The next prime is 82040389. The reversal of 82040388 is 88304028.

It is not an unprimeable number, because it can be changed into a prime (82040389) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 78981 + ... + 80012.

It is an arithmetic number, because the mean of its divisors is an integer number (8161692).

Almost surely, 2^82040388 is an apocalyptic number.

It is an amenable number.

82040388 is an abundant number, since it is smaller than the sum of its proper divisors (113840220).

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

82040388 is a wasteful number, since it uses less digits than its factorization.

82040388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159043 (or 159041 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 82040388 is about 9057.6149178468. The cubic root of 82040388 is about 434.5194640722.

It can be divided in two parts, 82040 and 388, that added together give a palindrome (82428).

The spelling of 82040388 in words is "eighty-two million, forty thousand, three hundred eighty-eight".