85578432 has 56 divisors (see below), whose sum is σ = 238353600. Its totient is φ = 27023616.

The previous prime is 85578431. The next prime is 85578457. The reversal of 85578432 is 23487558.

It is not an unprimeable number, because it can be changed into a prime (85578431) 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 7 ways as a sum of consecutive naturals, for example, 8082 + ... + 15377.

Almost surely, 2^85578432 is an apocalyptic number.

It is an amenable number.

85578432 is an abundant number, since it is smaller than the sum of its proper divisors (152775168).

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

85578432 is a wasteful number, since it uses less digits than its factorization.

85578432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23493 (or 23483 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 85578432 is about 9250.8611491039. The cubic root of 85578432 is about 440.6780729593.

The spelling of 85578432 in words is "eighty-five million, five hundred seventy-eight thousand, four hundred thirty-two".