86788278 has 24 divisors (see below), whose sum is σ = 188994000. Its totient is φ = 28782864.

The previous prime is 86788243. The next prime is 86788279. The reversal of 86788278 is 87288768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86788279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8533 + ... + 15696.

It is an arithmetic number, because the mean of its divisors is an integer number (7874750).

Almost surely, 2^86788278 is an apocalyptic number.

86788278 is an abundant number, since it is smaller than the sum of its proper divisors (102205722).

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

86788278 is a wasteful number, since it uses less digits than its factorization.

86788278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24436 (or 24433 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 86788278 is about 9316.0226491781. The cubic root of 86788278 is about 442.7450256489.

The spelling of 86788278 in words is "eighty-six million, seven hundred eighty-eight thousand, two hundred seventy-eight".