85438512 has 30 divisors (see below), whose sum is σ = 239109572. Its totient is φ = 28479456.

The previous prime is 85438477. The next prime is 85438523. The reversal of 85438512 is 21583458.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 296518 + ... + 296805.

Almost surely, 2^85438512 is an apocalyptic number.

It is an amenable number.

85438512 is an abundant number, since it is smaller than the sum of its proper divisors (153671060).

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

85438512 is a wasteful number, since it uses less digits than its factorization.

85438512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593337 (or 593328 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 85438512 is about 9243.2955162107. The cubic root of 85438512 is about 440.4377736633.

The spelling of 85438512 in words is "eighty-five million, four hundred thirty-eight thousand, five hundred twelve".