84823780 has 12 divisors (see below), whose sum is σ = 178129980. Its totient is φ = 33929504.

The previous prime is 84823757. The next prime is 84823787. The reversal of 84823780 is 8732848.

It can be written as a sum of positive squares in 2 ways, for example, as 44195904 + 40627876 = 6648^2 + 6374^2 .

It is not an unprimeable number, because it can be changed into a prime (84823787) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2120575 + ... + 2120614.

It is an arithmetic number, because the mean of its divisors is an integer number (14844165).

Almost surely, 2^84823780 is an apocalyptic number.

It is an amenable number.

84823780 is an abundant number, since it is smaller than the sum of its proper divisors (93306200).

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

84823780 is a wasteful number, since it uses less digits than its factorization.

84823780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241198 (or 4241196 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 84823780 is about 9209.9826275623. The cubic root of 84823780 is about 439.3789102036.

The spelling of 84823780 in words is "eighty-four million, eight hundred twenty-three thousand, seven hundred eighty".