86542278 has 8 divisors (see below), whose sum is σ = 173084568. Its totient is φ = 28847424.

The previous prime is 86542277. The next prime is 86542301. The reversal of 86542278 is 87224568.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

86542278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86542277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7211851 + ... + 7211862.

It is an arithmetic number, because the mean of its divisors is an integer number (21635571).

Almost surely, 2^86542278 is an apocalyptic number.

86542278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

86542278 is a wasteful number, since it uses less digits than its factorization.

86542278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14423718.

The product of its digits is 215040, while the sum is 42.

The square root of 86542278 is about 9302.8102205731. The cubic root of 86542278 is about 442.3263118649.

The spelling of 86542278 in words is "eighty-six million, five hundred forty-two thousand, two hundred seventy-eight".