2228925720 has 384 divisors, whose sum is σ = 8332761600. Its totient is φ = 474163200.

The previous prime is 2228925619. The next prime is 2228925731. The reversal of 2228925720 is 275298222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7931980 + ... + 7932260.

It is an arithmetic number, because the mean of its divisors is an integer number (21699900).

Almost surely, 2^2228925720 is an apocalyptic number.

2228925720 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 2228925720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4166380800).

2228925720 is an abundant number, since it is smaller than the sum of its proper divisors (6103835880).

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

2228925720 is a wasteful number, since it uses less digits than its factorization.

2228925720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2228925720 is about 47211.4998702647. The cubic root of 2228925720 is about 1306.2667285084.

The spelling of 2228925720 in words is "two billion, two hundred twenty-eight million, nine hundred twenty-five thousand, seven hundred twenty".