86143572 has 72 divisors (see below), whose sum is σ = 227627400. Its totient is φ = 27433728.

The previous prime is 86143567. The next prime is 86143591. The reversal of 86143572 is 27534168.

86143572 is a `hidden beast` number, since 8 + 614 + 35 + 7 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24740676 + 61402896 = 4974^2 + 7836^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 113418 + ... + 114174.

Almost surely, 2^86143572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86143572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113813700).

86143572 is an abundant number, since it is smaller than the sum of its proper divisors (141483828).

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

86143572 is a wasteful number, since it uses less digits than its factorization.

86143572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 900 counting only the distinct ones).

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

The square root of 86143572 is about 9281.3561509081. The cubic root of 86143572 is about 441.6459905039.

The spelling of 86143572 in words is "eighty-six million, one hundred forty-three thousand, five hundred seventy-two".