85978422 has 20 divisors (see below), whose sum is σ = 192655716. Its totient is φ = 28659420.

The previous prime is 85978411. The next prime is 85978427. The reversal of 85978422 is 22487958.

It is a super-2 number, since 2×85978422² = 14784578099220168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85978427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 265204 + ... + 265527.

Almost surely, 2^85978422 is an apocalyptic number.

85978422 is an abundant number, since it is smaller than the sum of its proper divisors (106677294).

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

85978422 is a wasteful number, since it uses less digits than its factorization.

85978422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530745 (or 530736 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 85978422 is about 9272.4550147197. The cubic root of 85978422 is about 441.3635763349.

The spelling of 85978422 in words is "eighty-five million, nine hundred seventy-eight thousand, four hundred twenty-two".