85422872 has 8 divisors (see below), whose sum is σ = 160167900. Its totient is φ = 42711432.

The previous prime is 85422863. The next prime is 85422877. The reversal of 85422872 is 27822458.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85422877) 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 as a sum of consecutive naturals, namely, 5338922 + ... + 5338937.

Almost surely, 2^85422872 is an apocalyptic number.

It is an amenable number.

85422872 is a deficient number, since it is larger than the sum of its proper divisors (74745028).

85422872 is a wasteful number, since it uses less digits than its factorization.

85422872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10677865 (or 10677861 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 85422872 is about 9242.4494588826. The cubic root of 85422872 is about 440.4108971530.

The spelling of 85422872 in words is "eighty-five million, four hundred twenty-two thousand, eight hundred seventy-two".