858117480 has 192 divisors, whose sum is σ = 2860159680. Its totient is φ = 205793280.

The previous prime is 858117461. The next prime is 858117487. The reversal of 858117480 is 84711858.

858117480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (858117487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1640499 + ... + 1641021.

It is an arithmetic number, because the mean of its divisors is an integer number (14896665).

Almost surely, 2^858117480 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 858117480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430079840).

858117480 is an abundant number, since it is smaller than the sum of its proper divisors (2002042200).

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

858117480 is a wasteful number, since it uses less digits than its factorization.

858117480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 858117480 is about 29293.6423136489. The cubic root of 858117480 is about 950.2741517177.

The spelling of 858117480 in words is "eight hundred fifty-eight million, one hundred seventeen thousand, four hundred eighty".