85822144 has 28 divisors (see below), whose sum is σ = 171824904. Its totient is φ = 42527744.

The previous prime is 85822123. The next prime is 85822147. The reversal of 85822144 is 44122858.

It is not an unprimeable number, because it can be changed into a prime (85822147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299 + ... + 13165.

Almost surely, 2^85822144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85822144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85912452).

85822144 is an abundant number, since it is smaller than the sum of its proper divisors (86002760).

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

85822144 is a wasteful number, since it uses less digits than its factorization.

85822144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11992 (or 11982 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 85822144 is about 9264.0241795885. The cubic root of 85822144 is about 441.0960004769.

The spelling of 85822144 in words is "eighty-five million, eight hundred twenty-two thousand, one hundred forty-four".