85863240 has 80 divisors (see below), whose sum is σ = 288606780. Its totient is φ = 22896000.

The previous prime is 85863227. The next prime is 85863241. The reversal of 85863240 is 4236858.

85863240 is a `hidden beast` number, since 8 + 586 + 32 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83942244 + 1920996 = 9162^2 + 1386^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 85863195 and 85863204.

It is not an unprimeable number, because it can be changed into a prime (85863241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10011 + ... + 16490.

Almost surely, 2^85863240 is an apocalyptic number.

It is an amenable number.

85863240 is an abundant number, since it is smaller than the sum of its proper divisors (202743540).

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

85863240 is a wasteful number, since it uses less digits than its factorization.

85863240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26524 (or 26511 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 85863240 is about 9266.2419566942. The cubic root of 85863240 is about 441.1663956287.

The spelling of 85863240 in words is "eighty-five million, eight hundred sixty-three thousand, two hundred forty".