85438752 has 144 divisors (see below), whose sum is σ = 267859872. Its totient is φ = 23761920.

The previous prime is 85438747. The next prime is 85438781. The reversal of 85438752 is 25783458.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 23 ways as a sum of consecutive naturals, for example, 192643 + ... + 193085.

It is an arithmetic number, because the mean of its divisors is an integer number (1860138).

Almost surely, 2^85438752 is an apocalyptic number.

85438752 is a gapful number since it is divisible by the number (82) 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 85438752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133929936).

85438752 is an abundant number, since it is smaller than the sum of its proper divisors (182421120).

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

85438752 is a wasteful number, since it uses less digits than its factorization.

85438752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 496 counting only the distinct ones).

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

The square root of 85438752 is about 9243.3084985843. The cubic root of 85438752 is about 440.4381860651.

The spelling of 85438752 in words is "eighty-five million, four hundred thirty-eight thousand, seven hundred fifty-two".