86205378 has 32 divisors (see below), whose sum is σ = 197320320. Its totient is φ = 24595200.

The previous prime is 86205373. The next prime is 86205391. The reversal of 86205378 is 87350268.

It is a super-2 number, since 2×86205378² = 14862734392245768, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86205373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49588 + ... + 51296.

It is an arithmetic number, because the mean of its divisors is an integer number (6166260).

Almost surely, 2^86205378 is an apocalyptic number.

86205378 is an abundant number, since it is smaller than the sum of its proper divisors (111114942).

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

86205378 is a wasteful number, since it uses less digits than its factorization.

86205378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 86205378 is about 9284.6851319794. The cubic root of 86205378 is about 441.7515888126.

The spelling of 86205378 in words is "eighty-six million, two hundred five thousand, three hundred seventy-eight".