2291063928 has 256 divisors, whose sum is σ = 6580224000. Its totient is φ = 661478400.

The previous prime is 2291063903. The next prime is 2291063963. The reversal of 2291063928 is 8293601922.

It is a self number, because there is not a number n which added to its sum of digits gives 2291063928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34194951 + ... + 34195017.

It is an arithmetic number, because the mean of its divisors is an integer number (25704000).

Almost surely, 2^2291063928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291063928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3290112000).

2291063928 is an abundant number, since it is smaller than the sum of its proper divisors (4289160072).

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

2291063928 is a wasteful number, since it uses less digits than its factorization.

2291063928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2291063928 is about 47865.0595737642. The cubic root of 2291063928 is about 1318.2943856837.

The spelling of 2291063928 in words is "two billion, two hundred ninety-one million, sixty-three thousand, nine hundred twenty-eight".