86178340 has 24 divisors (see below), whose sum is σ = 181706112. Its totient is φ = 34332000.

The previous prime is 86178331. The next prime is 86178353. The reversal of 86178340 is 4387168.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 86178340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3564 + ... + 13603.

It is an arithmetic number, because the mean of its divisors is an integer number (7571088).

Almost surely, 2^86178340 is an apocalyptic number.

It is an amenable number.

86178340 is an abundant number, since it is smaller than the sum of its proper divisors (95527772).

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

86178340 is a wasteful number, since it uses less digits than its factorization.

86178340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17427 (or 17425 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 86178340 is about 9283.2289641051. The cubic root of 86178340 is about 441.7053993958.

The spelling of 86178340 in words is "eighty-six million, one hundred seventy-eight thousand, three hundred forty".