85824220 has 12 divisors (see below), whose sum is σ = 180230904. Its totient is φ = 34329680.

The previous prime is 85824217. The next prime is 85824229. The reversal of 85824220 is 2242858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85824229) 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, 2145586 + ... + 2145625.

It is an arithmetic number, because the mean of its divisors is an integer number (15019242).

Almost surely, 2^85824220 is an apocalyptic number.

It is an amenable number.

85824220 is an abundant number, since it is smaller than the sum of its proper divisors (94406684).

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

85824220 is a wasteful number, since it uses less digits than its factorization.

85824220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291220 (or 4291218 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 85824220 is about 9264.1362252506. The cubic root of 85824220 is about 441.0995570878.

The spelling of 85824220 in words is "eighty-five million, eight hundred twenty-four thousand, two hundred twenty".