2193308928 has 270 divisors, whose sum is σ = 6925937634. Its totient is φ = 690259968.

The previous prime is 2193308927. The next prime is 2193308933. The reversal of 2193308928 is 8298033912.

2193308928 is a `hidden beast` number, since 219 + 330 + 89 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2163366144 + 29942784 = 46512^2 + 5472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193308921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7485550 + ... + 7485842.

Almost surely, 2^2193308928 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 2193308928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3462968817).

2193308928 is an abundant number, since it is smaller than the sum of its proper divisors (4732628706).

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

2193308928 is an equidigital number, since it uses as much as digits as its factorization.

2193308928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2193308928 is about 46832.7762149544. The cubic root of 2193308928 is about 1299.2715698236.

The spelling of 2193308928 in words is "two billion, one hundred ninety-three million, three hundred eight thousand, nine hundred twenty-eight".