854847820 has 24 divisors (see below), whose sum is σ = 1801816128. Its totient is φ = 340675200.

The previous prime is 854847817. The next prime is 854847823. The reversal of 854847820 is 28748458.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (854847817) and next prime (854847823).

It is not an unprimeable number, because it can be changed into a prime (854847823) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73441 + ... + 84280.

It is an arithmetic number, because the mean of its divisors is an integer number (75075672).

Almost surely, 2^854847820 is an apocalyptic number.

It is an amenable number.

854847820 is an abundant number, since it is smaller than the sum of its proper divisors (946968308).

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

854847820 is a wasteful number, since it uses less digits than its factorization.

854847820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158001 (or 157999 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 854847820 is about 29237.7806955316. The cubic root of 854847820 is about 949.0656815902.

The spelling of 854847820 in words is "eight hundred fifty-four million, eight hundred forty-seven thousand, eight hundred twenty".