86222178 has 64 divisors (see below), whose sum is σ = 219985920. Its totient is φ = 24521616.

The previous prime is 86222167. The next prime is 86222179. The reversal of 86222178 is 87122268.

It is a happy number.

86222178 is a `hidden beast` number, since 8 + 622 + 21 + 7 + 8 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86222179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115675 + ... + 116417.

It is an arithmetic number, because the mean of its divisors is an integer number (3437280).

Almost surely, 2^86222178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86222178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109992960).

86222178 is an abundant number, since it is smaller than the sum of its proper divisors (133763742).

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

86222178 is a wasteful number, since it uses less digits than its factorization.

86222178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 1062 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 86222178 is about 9285.5898035612. The cubic root of 86222178 is about 441.7802836374.

The spelling of 86222178 in words is "eighty-six million, two hundred twenty-two thousand, one hundred seventy-eight".