905797830 has 256 divisors, whose sum is σ = 2757888000. Its totient is φ = 189665280.

The previous prime is 905797819. The next prime is 905797847. The reversal of 905797830 is 38797509.

It is a self number, because there is not a number n which added to its sum of digits gives 905797830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8015854 + ... + 8015966.

It is an arithmetic number, because the mean of its divisors is an integer number (10773000).

Almost surely, 2^905797830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 905797830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1378944000).

905797830 is an abundant number, since it is smaller than the sum of its proper divisors (1852090170).

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

905797830 is a wasteful number, since it uses less digits than its factorization.

905797830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 905797830 is about 30096.4753750335. The cubic root of 905797830 is about 967.5581867802.

The spelling of 905797830 in words is "nine hundred five million, seven hundred ninety-seven thousand, eight hundred thirty".