86212434 has 64 divisors (see below), whose sum is σ = 216317952. Its totient is φ = 22252800.

The previous prime is 86212421. The next prime is 86212439. The reversal of 86212434 is 43421268.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86212439) 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, 87754 + ... + 88730.

It is an arithmetic number, because the mean of its divisors is an integer number (3379968).

Almost surely, 2^86212434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86212434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108158976).

86212434 is an abundant number, since it is smaller than the sum of its proper divisors (130105518).

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

86212434 is a wasteful number, since it uses less digits than its factorization.

86212434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its digits is 9216, while the sum is 30.

The square root of 86212434 is about 9285.0651047798. The cubic root of 86212434 is about 441.7636410930.

The spelling of 86212434 in words is "eighty-six million, two hundred twelve thousand, four hundred thirty-four".