85445240 has 16 divisors (see below), whose sum is σ = 192251880. Its totient is φ = 34178080.

The previous prime is 85445237. The next prime is 85445273. The reversal of 85445240 is 4254458.

It is a junction number, because it is equal to n+sod(n) for n = 85445197 and 85445206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068026 + ... + 1068105.

Almost surely, 2^85445240 is an apocalyptic number.

It is an amenable number.

85445240 is an abundant number, since it is smaller than the sum of its proper divisors (106806640).

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

85445240 is a wasteful number, since it uses less digits than its factorization.

85445240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136142 (or 2136138 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 85445240 is about 9243.6594485085. The cubic root of 85445240 is about 440.4493343655.

Adding to 85445240 its reverse (4254458), we get a palindrome (89699698).

The spelling of 85445240 in words is "eighty-five million, four hundred forty-five thousand, two hundred forty".