8778941220 has 48 divisors (see below), whose sum is σ = 28092613248. Its totient is φ = 2006615040.

The previous prime is 8778941179. The next prime is 8778941261. The reversal of 8778941220 is 221498778.

It is an interprime number because it is at equal distance from previous prime (8778941179) and next prime (8778941261).

It is a self number, because there is not a number n which added to its sum of digits gives 8778941220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10450701 + ... + 10451540.

It is an arithmetic number, because the mean of its divisors is an integer number (585262776).

Almost surely, 2^8778941220 is an apocalyptic number.

It is an amenable number.

8778941220 is an abundant number, since it is smaller than the sum of its proper divisors (19313672028).

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

8778941220 is a wasteful number, since it uses less digits than its factorization.

8778941220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20902260 (or 20902258 counting only the distinct ones).

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

The square root of 8778941220 is about 93696.0042904712. The cubic root of 8778941220 is about 2062.9120548993.

The spelling of 8778941220 in words is "eight billion, seven hundred seventy-eight million, nine hundred forty-one thousand, two hundred twenty".