8120928444 has 24 divisors (see below), whose sum is σ = 19003450368. Its totient is φ = 2699173680.

The previous prime is 8120928427. The next prime is 8120928521. The reversal of 8120928444 is 4448290218.

It is a super-2 number, since 2×8120928444² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8120928396 and 8120928405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970972 + ... + 979299.

It is an arithmetic number, because the mean of its divisors is an integer number (791810432).

Almost surely, 2^8120928444 is an apocalyptic number.

It is an amenable number.

8120928444 is an abundant number, since it is smaller than the sum of its proper divisors (10882521924).

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

8120928444 is a wasteful number, since it uses less digits than its factorization.

8120928444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950625 (or 1950623 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 8120928444 is about 90116.1941273598. The cubic root of 8120928444 is about 2010.0270157999.

The spelling of 8120928444 in words is "eight billion, one hundred twenty million, nine hundred twenty-eight thousand, four hundred forty-four".