7928421036 has 24 divisors (see below), whose sum is σ = 19587864240. Its totient is φ = 2487347712.

The previous prime is 7928421031. The next prime is 7928421037. The reversal of 7928421036 is 6301248297.

It is not an unprimeable number, because it can be changed into a prime (7928421031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19432201 + ... + 19432608.

It is an arithmetic number, because the mean of its divisors is an integer number (816161010).

Almost surely, 2^7928421036 is an apocalyptic number.

It is an amenable number.

7928421036 is an abundant number, since it is smaller than the sum of its proper divisors (11659443204).

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

7928421036 is a wasteful number, since it uses less digits than its factorization.

7928421036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38864833 (or 38864831 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 7928421036 is about 89041.6814531262. The cubic root of 7928421036 is about 1994.0172072745.

The spelling of 7928421036 in words is "seven billion, nine hundred twenty-eight million, four hundred twenty-one thousand, thirty-six".