2222857728 has 800 divisors, whose sum is σ = 8872765440. Its totient is φ = 537477120.

The previous prime is 2222857657. The next prime is 2222857771. The reversal of 2222857728 is 8277582222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 71705073 + ... + 71705103.

Almost surely, 2^2222857728 is an apocalyptic number.

2222857728 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 2222857728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4436382720).

2222857728 is an abundant number, since it is smaller than the sum of its proper divisors (6649907712).

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

2222857728 is a wasteful number, since it uses less digits than its factorization.

2222857728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 75 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 2222857728 is about 47147.1921539343. The cubic root of 2222857728 is about 1305.0802645836.

The spelling of 2222857728 in words is "two billion, two hundred twenty-two million, eight hundred fifty-seven thousand, seven hundred twenty-eight".