86543128 has 32 divisors (see below), whose sum is σ = 189977760. Its totient is φ = 36184320.

The previous prime is 86543123. The next prime is 86543129. The reversal of 86543128 is 82134568.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86543123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16551 + ... + 21142.

It is an arithmetic number, because the mean of its divisors is an integer number (5936805).

Almost surely, 2^86543128 is an apocalyptic number.

It is an amenable number.

86543128 is an abundant number, since it is smaller than the sum of its proper divisors (103434632).

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

86543128 is a wasteful number, since it uses less digits than its factorization.

86543128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37747 (or 37743 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 86543128 is about 9302.8559055808. The cubic root of 86543128 is about 442.3277600054.

The spelling of 86543128 in words is "eighty-six million, five hundred forty-three thousand, one hundred twenty-eight".