84722180 has 12 divisors (see below), whose sum is σ = 177916620. Its totient is φ = 33888864.

The previous prime is 84722177. The next prime is 84722189. The reversal of 84722180 is 8122748.

It can be written as a sum of positive squares in 2 ways, for example, as 18267076 + 66455104 = 4274^2 + 8152^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (84722189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118035 + ... + 2118074.

It is an arithmetic number, because the mean of its divisors is an integer number (14826385).

Almost surely, 2^84722180 is an apocalyptic number.

It is an amenable number.

84722180 is an abundant number, since it is smaller than the sum of its proper divisors (93194440).

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

84722180 is a wasteful number, since it uses less digits than its factorization.

84722180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236118 (or 4236116 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 84722180 is about 9204.4652207502. The cubic root of 84722180 is about 439.2034140851.

The spelling of 84722180 in words is "eighty-four million, seven hundred twenty-two thousand, one hundred eighty".