8278045820 has 48 divisors (see below), whose sum is σ = 18987544800. Its totient is φ = 3006501120.

The previous prime is 8278045793. The next prime is 8278045823. The reversal of 8278045820 is 285408728.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8278045823) 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, 159686 + ... + 205074.

It is an arithmetic number, because the mean of its divisors is an integer number (395573850).

Almost surely, 2^8278045820 is an apocalyptic number.

It is an amenable number.

8278045820 is an abundant number, since it is smaller than the sum of its proper divisors (10709498980).

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

8278045820 is a wasteful number, since it uses less digits than its factorization.

8278045820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46238 (or 46236 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 44.

The square root of 8278045820 is about 90983.7667938627. The cubic root of 8278045820 is about 2022.9071153509.

The spelling of 8278045820 in words is "eight billion, two hundred seventy-eight million, forty-five thousand, eight hundred twenty".