84420180 has 144 divisors (see below), whose sum is σ = 282522240. Its totient is φ = 20272896.

The previous prime is 84420109. The next prime is 84420187. The reversal of 84420180 is 8102448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84420187) 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, 100201 + ... + 101039.

It is an arithmetic number, because the mean of its divisors is an integer number (1961960).

Almost surely, 2^84420180 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 84420180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141261120).

84420180 is an abundant number, since it is smaller than the sum of its proper divisors (198102060).

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

84420180 is a wasteful number, since it uses less digits than its factorization.

84420180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 84420180 is about 9188.0454940101. The cubic root of 84420180 is about 438.6809324645.

The spelling of 84420180 in words is "eighty-four million, four hundred twenty thousand, one hundred eighty".