805933830 has 128 divisors (see below), whose sum is σ = 2229857280. Its totient is φ = 184757760.

The previous prime is 805933801. The next prime is 805933831. The reversal of 805933830 is 38339508.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805933831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 451119 + ... + 452901.

It is an arithmetic number, because the mean of its divisors is an integer number (17420760).

Almost surely, 2^805933830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805933830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114928640).

805933830 is an abundant number, since it is smaller than the sum of its proper divisors (1423923450).

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

805933830 is a wasteful number, since it uses less digits than its factorization.

805933830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 805933830 is about 28388.9737398167. The cubic root of 805933830 is about 930.6073151946.

The spelling of 805933830 in words is "eight hundred five million, nine hundred thirty-three thousand, eight hundred thirty".