8421978702 has 32 divisors (see below), whose sum is σ = 17304827904. Its totient is φ = 2730564000.

The previous prime is 8421978673. The next prime is 8421978707. The reversal of 8421978702 is 2078791248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421978707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282327 + ... + 1288877.

It is an arithmetic number, because the mean of its divisors is an integer number (540775872).

Almost surely, 2^8421978702 is an apocalyptic number.

8421978702 is an abundant number, since it is smaller than the sum of its proper divisors (8882849202).

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

8421978702 is a wasteful number, since it uses less digits than its factorization.

8421978702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 8421978702 is about 91771.3392187343. The cubic root of 8421978702 is about 2034.5641118382.

The spelling of 8421978702 in words is "eight billion, four hundred twenty-one million, nine hundred seventy-eight thousand, seven hundred two".