85159240 has 32 divisors (see below), whose sum is σ = 192487680. Its totient is φ = 33907392.

The previous prime is 85159229. The next prime is 85159241. The reversal of 85159240 is 4295158.

It is a junction number, because it is equal to n+sod(n) for n = 85159196 and 85159205.

It is not an unprimeable number, because it can be changed into a prime (85159241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4147 + ... + 13693.

It is an arithmetic number, because the mean of its divisors is an integer number (6015240).

Almost surely, 2^85159240 is an apocalyptic number.

It is an amenable number.

85159240 is an abundant number, since it is smaller than the sum of its proper divisors (107328440).

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

85159240 is a wasteful number, since it uses less digits than its factorization.

85159240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781 (or 9777 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 85159240 is about 9228.1764179062. The cubic root of 85159240 is about 439.9573650149.

The spelling of 85159240 in words is "eighty-five million, one hundred fifty-nine thousand, two hundred forty".