854115820 has 12 divisors (see below), whose sum is σ = 1793643264. Its totient is φ = 341646320.

The previous prime is 854115817. The next prime is 854115827. The reversal of 854115820 is 28511458.

It is not an unprimeable number, because it can be changed into a prime (854115827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21352876 + ... + 21352915.

It is an arithmetic number, because the mean of its divisors is an integer number (149470272).

Almost surely, 2^854115820 is an apocalyptic number.

It is an amenable number.

854115820 is an abundant number, since it is smaller than the sum of its proper divisors (939527444).

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

854115820 is a wasteful number, since it uses less digits than its factorization.

854115820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42705800 (or 42705798 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 854115820 is about 29225.2599646265. The cubic root of 854115820 is about 948.7947115413.

The spelling of 854115820 in words is "eight hundred fifty-four million, one hundred fifteen thousand, eight hundred twenty".