8235718420 has 12 divisors (see below), whose sum is σ = 17295008724. Its totient is φ = 3294287360.

The previous prime is 8235718367. The next prime is 8235718427. The reversal of 8235718420 is 248175328.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1190802064 + 7044916356 = 34508^2 + 83934^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8235718427) 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 3 ways as a sum of consecutive naturals, for example, 205892941 + ... + 205892980.

It is an arithmetic number, because the mean of its divisors is an integer number (1441250727).

Almost surely, 2^8235718420 is an apocalyptic number.

It is an amenable number.

8235718420 is an abundant number, since it is smaller than the sum of its proper divisors (9059290304).

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

8235718420 is a wasteful number, since it uses less digits than its factorization.

8235718420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411785930 (or 411785928 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 8235718420 is about 90750.8590592949. The cubic root of 8235718420 is about 2019.4533713539.

The spelling of 8235718420 in words is "eight billion, two hundred thirty-five million, seven hundred eighteen thousand, four hundred twenty".