86135238 has 72 divisors (see below), whose sum is σ = 225198792. Its totient is φ = 24603264.

The previous prime is 86135213. The next prime is 86135263. The reversal of 86135238 is 83253168.

86135238 is a `hidden beast` number, since 8 + 613 + 5 + 2 + 38 = 666.

It is an interprime number because it is at equal distance from previous prime (86135213) and next prime (86135263).

It is a Curzon number.

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 35 ways as a sum of consecutive naturals, for example, 22006 + ... + 25622.

It is an arithmetic number, because the mean of its divisors is an integer number (3127761).

Almost surely, 2^86135238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86135238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112599396).

86135238 is an abundant number, since it is smaller than the sum of its proper divisors (139063554).

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

86135238 is a wasteful number, since it uses less digits than its factorization.

86135238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648 (or 3629 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 86135238 is about 9280.9071754867. The cubic root of 86135238 is about 441.6317476289.

The spelling of 86135238 in words is "eighty-six million, one hundred thirty-five thousand, two hundred thirty-eight".