85324440 has 64 divisors (see below), whose sum is σ = 269452800. Its totient is φ = 21555072.

The previous prime is 85324439. The next prime is 85324441. The reversal of 85324440 is 4442358.

It is an interprime number because it is at equal distance from previous prime (85324439) and next prime (85324441).

It is a super-2 number, since 2×85324440² = 14560520122627200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 85324398 and 85324407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85324441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16432 + ... + 20991.

It is an arithmetic number, because the mean of its divisors is an integer number (4210200).

Almost surely, 2^85324440 is an apocalyptic number.

It is an amenable number.

85324440 is an abundant number, since it is smaller than the sum of its proper divisors (184128360).

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

85324440 is a wasteful number, since it uses less digits than its factorization.

85324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37456 (or 37452 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 85324440 is about 9237.1229287046. The cubic root of 85324440 is about 440.2416716444.

Adding to 85324440 its reverse (4442358), we get a palindrome (89766798).

The spelling of 85324440 in words is "eighty-five million, three hundred twenty-four thousand, four hundred forty".