85305340 has 12 divisors (see below), whose sum is σ = 179141256. Its totient is φ = 34122128.

The previous prime is 85305323. The next prime is 85305347. The reversal of 85305340 is 4350358.

It is a junction number, because it is equal to n+sod(n) for n = 85305299 and 85305308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85305347) 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, 2132614 + ... + 2132653.

It is an arithmetic number, because the mean of its divisors is an integer number (14928438).

Almost surely, 2^85305340 is an apocalyptic number.

It is an amenable number.

85305340 is an abundant number, since it is smaller than the sum of its proper divisors (93835916).

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

85305340 is a wasteful number, since it uses less digits than its factorization.

85305340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265276 (or 4265274 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 85305340 is about 9236.0889991381. The cubic root of 85305340 is about 440.2088196134.

Adding to 85305340 its reverse (4350358), we get a palindrome (89655698).

The spelling of 85305340 in words is "eighty-five million, three hundred five thousand, three hundred forty".