858034492 has 72 divisors (see below), whose sum is σ = 1813056000. Its totient is φ = 353898720.

The previous prime is 858034487. The next prime is 858034577. The reversal of 858034492 is 294430858.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1719259 + ... + 1719757.

Almost surely, 2^858034492 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 858034492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906528000).

858034492 is an abundant number, since it is smaller than the sum of its proper divisors (955021508).

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

858034492 is a wasteful number, since it uses less digits than its factorization.

858034492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 858034492 is about 29292.2257945688. The cubic root of 858034492 is about 950.2435172590.

The spelling of 858034492 in words is "eight hundred fifty-eight million, thirty-four thousand, four hundred ninety-two".