8778076420 has 12 divisors (see below), whose sum is σ = 18433960524. Its totient is φ = 3511230560.

The previous prime is 8778076357. The next prime is 8778076423. The reversal of 8778076420 is 246708778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3332521984 + 5445554436 = 57728^2 + 73794^2 .

It is not an unprimeable number, because it can be changed into a prime (8778076423) 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 3 ways as a sum of consecutive naturals, for example, 219451891 + ... + 219451930.

It is an arithmetic number, because the mean of its divisors is an integer number (1536163377).

Almost surely, 2^8778076420 is an apocalyptic number.

It is an amenable number.

8778076420 is an abundant number, since it is smaller than the sum of its proper divisors (9655884104).

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

8778076420 is a wasteful number, since it uses less digits than its factorization.

8778076420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438903830 (or 438903828 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 49.

The square root of 8778076420 is about 93691.3892521613. The cubic root of 8778076420 is about 2062.8443145768.

The spelling of 8778076420 in words is "eight billion, seven hundred seventy-eight million, seventy-six thousand, four hundred twenty".