2281668928 has 168 divisors, whose sum is σ = 5810504000. Its totient is φ = 887927040.

The previous prime is 2281668887. The next prime is 2281668943. The reversal of 2281668928 is 8298661822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2655763 + ... + 2656621.

Almost surely, 2^2281668928 is an apocalyptic number.

2281668928 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 2281668928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2905252000).

2281668928 is an abundant number, since it is smaller than the sum of its proper divisors (3528835072).

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

2281668928 is an equidigital number, since it uses as much as digits as its factorization.

2281668928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 879 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 52.

The square root of 2281668928 is about 47766.8182737766. The cubic root of 2281668928 is about 1316.4899337712.

The spelling of 2281668928 in words is "two billion, two hundred eighty-one million, six hundred sixty-eight thousand, nine hundred twenty-eight".