86878386 has 32 divisors (see below), whose sum is σ = 220644480. Its totient is φ = 24822288.

The previous prime is 86878373. The next prime is 86878387. The reversal of 86878386 is 68387868.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (86878387) 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, 114541 + ... + 115296.

It is an arithmetic number, because the mean of its divisors is an integer number (6895140).

Almost surely, 2^86878386 is an apocalyptic number.

86878386 is an abundant number, since it is smaller than the sum of its proper divisors (133766094).

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

86878386 is a wasteful number, since it uses less digits than its factorization.

86878386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229855 (or 229849 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 86878386 is about 9320.8575785708. The cubic root of 86878386 is about 442.8981994442.

The spelling of 86878386 in words is "eighty-six million, eight hundred seventy-eight thousand, three hundred eighty-six".