86278612 has 36 divisors (see below), whose sum is σ = 183284640. Its totient is φ = 35367024.

The previous prime is 86278607. The next prime is 86278631. The reversal of 86278612 is 21687268.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5062 + ... + 14077.

It is an arithmetic number, because the mean of its divisors is an integer number (5091240).

Almost surely, 2^86278612 is an apocalyptic number.

It is an amenable number.

86278612 is an abundant number, since it is smaller than the sum of its proper divisors (97006028).

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

86278612 is a wasteful number, since it uses less digits than its factorization.

86278612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19180 (or 19171 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 86278612 is about 9288.6281010707. The cubic root of 86278612 is about 441.8766470546.

The spelling of 86278612 in words is "eighty-six million, two hundred seventy-eight thousand, six hundred twelve".