85424224 has 12 divisors (see below), whose sum is σ = 168179004. Its totient is φ = 42712096.

The previous prime is 85424221. The next prime is 85424237. The reversal of 85424224 is 42242458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85424221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334722 + ... + 1334785.

It is an arithmetic number, because the mean of its divisors is an integer number (14014917).

Almost surely, 2^85424224 is an apocalyptic number.

It is an amenable number.

85424224 is a deficient number, since it is larger than the sum of its proper divisors (82754780).

85424224 is a wasteful number, since it uses less digits than its factorization.

85424224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669517 (or 2669509 counting only the distinct ones).

The product of its digits is 20480, while the sum is 31.

The square root of 85424224 is about 9242.5225993773. The cubic root of 85424224 is about 440.4132206228.

The spelling of 85424224 in words is "eighty-five million, four hundred twenty-four thousand, two hundred twenty-four".