86215734 has 72 divisors (see below), whose sum is σ = 209002248. Its totient is φ = 25470720.

The previous prime is 86215733. The next prime is 86215747. The reversal of 86215734 is 43751268.

86215734 is a `hidden beast` number, since 86 + 2 + 1 + 573 + 4 = 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.

Its product of digits (40320) is a multiple of the sum of its prime divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86215733) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 888774 + ... + 888870.

It is an arithmetic number, because the mean of its divisors is an integer number (2902809).

Almost surely, 2^86215734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86215734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104501124).

86215734 is an abundant number, since it is smaller than the sum of its proper divisors (122786514).

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

86215734 is a wasteful number, since it uses less digits than its factorization.

86215734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 180 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 86215734 is about 9285.2428078107. The cubic root of 86215734 is about 441.7692775631.

The spelling of 86215734 in words is "eighty-six million, two hundred fifteen thousand, seven hundred thirty-four".