2278620288 has 256 divisors, whose sum is σ = 7755264000. Its totient is φ = 645166080.

The previous prime is 2278620271. The next prime is 2278620293. The reversal of 2278620288 is 8820268722.

It is a happy number.

It is a super-2 number, since 2×2278620288² = 10384220833770405888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3168793 + ... + 3169511.

It is an arithmetic number, because the mean of its divisors is an integer number (30294000).

Almost surely, 2^2278620288 is an apocalyptic number.

2278620288 is a gapful number since it is divisible by the number (28) 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 2278620288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3877632000).

2278620288 is an abundant number, since it is smaller than the sum of its proper divisors (5476643712).

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

2278620288 is a wasteful number, since it uses less digits than its factorization.

2278620288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 2278620288 is about 47734.8959148336. The cubic root of 2278620288 is about 1315.9033320530.

The spelling of 2278620288 in words is "two billion, two hundred seventy-eight million, six hundred twenty thousand, two hundred eighty-eight".