85289320 has 16 divisors (see below), whose sum is σ = 191901060. Its totient is φ = 34115712.

The previous prime is 85289299. The next prime is 85289327. The reversal of 85289320 is 2398258.

It can be written as a sum of positive squares in 2 ways, for example, as 85045284 + 244036 = 9222^2 + 494^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85289320.

It is not an unprimeable number, because it can be changed into a prime (85289327) 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, 1066077 + ... + 1066156.

Almost surely, 2^85289320 is an apocalyptic number.

It is an amenable number.

85289320 is an abundant number, since it is smaller than the sum of its proper divisors (106611740).

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

85289320 is a wasteful number, since it uses less digits than its factorization.

85289320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132244 (or 2132240 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 85289320 is about 9235.2217082212. The cubic root of 85289320 is about 440.1812614059.

The spelling of 85289320 in words is "eighty-five million, two hundred eighty-nine thousand, three hundred twenty".