86871378 has 32 divisors (see below), whose sum is σ = 190248192. Its totient is φ = 26226000.

The previous prime is 86871373. The next prime is 86871383. The reversal of 86871378 is 87317868.

It is an interprime number because it is at equal distance from previous prime (86871373) and next prime (86871383).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86871371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16353 + ... + 21003.

It is an arithmetic number, because the mean of its divisors is an integer number (5945256).

Almost surely, 2^86871378 is an apocalyptic number.

86871378 is an abundant number, since it is smaller than the sum of its proper divisors (103376814).

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

86871378 is a wasteful number, since it uses less digits than its factorization.

86871378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950.

The product of its digits is 451584, while the sum is 48.

The square root of 86871378 is about 9320.4816399154. The cubic root of 86871378 is about 442.8862904060.

The spelling of 86871378 in words is "eighty-six million, eight hundred seventy-one thousand, three hundred seventy-eight".