84222780 has 48 divisors (see below), whose sum is σ = 246081024. Its totient is φ = 21482560.

The previous prime is 84222773. The next prime is 84222793. The reversal of 84222780 is 8722248.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29136 + ... + 31895.

It is an arithmetic number, because the mean of its divisors is an integer number (5126688).

Almost surely, 2^84222780 is an apocalyptic number.

It is an amenable number.

84222780 is an abundant number, since it is smaller than the sum of its proper divisors (161858244).

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

84222780 is a wasteful number, since it uses less digits than its factorization.

84222780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61066 (or 61064 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 84222780 is about 9177.2969876756. The cubic root of 84222780 is about 438.3387425620.

The spelling of 84222780 in words is "eighty-four million, two hundred twenty-two thousand, seven hundred eighty".