85416140 has 12 divisors (see below), whose sum is σ = 179373936. Its totient is φ = 34166448.

The previous prime is 85416139. The next prime is 85416151. The reversal of 85416140 is 4161458.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135384 + ... + 2135423.

It is an arithmetic number, because the mean of its divisors is an integer number (14947828).

Almost surely, 2^85416140 is an apocalyptic number.

It is an amenable number.

85416140 is an abundant number, since it is smaller than the sum of its proper divisors (93957796).

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

85416140 is a wasteful number, since it uses less digits than its factorization.

85416140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270816 (or 4270814 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 85416140 is about 9242.0852625368. The cubic root of 85416140 is about 440.3993275582.

Adding to 85416140 its reverse (4161458), we get a palindrome (89577598).

The spelling of 85416140 in words is "eighty-five million, four hundred sixteen thousand, one hundred forty".