85422000 has 160 divisors (see below), whose sum is σ = 287838720. Its totient is φ = 21753600.

The previous prime is 85421981. The next prime is 85422013. The reversal of 85422000 is 22458.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137691 + ... + 138309.

It is an arithmetic number, because the mean of its divisors is an integer number (1798992).

Almost surely, 2^85422000 is an apocalyptic number.

85422000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85422000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143919360).

85422000 is an abundant number, since it is smaller than the sum of its proper divisors (202416720).

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

85422000 is a wasteful number, since it uses less digits than its factorization.

85422000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 85422000 is about 9242.4022851205. The cubic root of 85422000 is about 440.4093985707.

Adding to 85422000 its reverse (22458), we get a palindrome (85444458).

The spelling of 85422000 in words is "eighty-five million, four hundred twenty-two thousand".