2278008720 has 240 divisors, whose sum is σ = 8286969600. Its totient is φ = 557466624.

The previous prime is 2278008673. The next prime is 2278008731. The reversal of 2278008720 is 278008722.

2278008720 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1862029 + ... + 1863251.

It is an arithmetic number, because the mean of its divisors is an integer number (34529040).

Almost surely, 2^2278008720 is an apocalyptic number.

2278008720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2278008720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4143484800).

2278008720 is an abundant number, since it is smaller than the sum of its proper divisors (6008960880).

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

2278008720 is a wasteful number, since it uses less digits than its factorization.

2278008720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2278008720 is about 47728.4896052662. The cubic root of 2278008720 is about 1315.7855946687.

The spelling of 2278008720 in words is "two billion, two hundred seventy-eight million, eight thousand, seven hundred twenty".