84840220 has 24 divisors (see below), whose sum is σ = 178920000. Its totient is φ = 33792192.

The previous prime is 84840209. The next prime is 84840221. The reversal of 84840220 is 2204848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84840221) 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 7 ways as a sum of consecutive naturals, for example, 4095 + ... + 13654.

It is an arithmetic number, because the mean of its divisors is an integer number (7455000).

Almost surely, 2^84840220 is an apocalyptic number.

It is an amenable number.

84840220 is an abundant number, since it is smaller than the sum of its proper divisors (94079780).

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

84840220 is a wasteful number, since it uses less digits than its factorization.

84840220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17997 (or 17995 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 84840220 is about 9210.8750941482. The cubic root of 84840220 is about 439.4072942356.

The spelling of 84840220 in words is "eighty-four million, eight hundred forty thousand, two hundred twenty".