86112978 has 96 divisors (see below), whose sum is σ = 217559040. Its totient is φ = 22174560.

The previous prime is 86112953. The next prime is 86112979. The reversal of 86112978 is 87921168.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86112979) 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, 1459513 + ... + 1459571.

It is an arithmetic number, because the mean of its divisors is an integer number (2266240).

Almost surely, 2^86112978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86112978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108779520).

86112978 is an abundant number, since it is smaller than the sum of its proper divisors (131446062).

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

86112978 is a wasteful number, since it uses less digits than its factorization.

86112978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 121 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 86112978 is about 9279.7078617810. The cubic root of 86112978 is about 441.5937006000.

The spelling of 86112978 in words is "eighty-six million, one hundred twelve thousand, nine hundred seventy-eight".