85728374 has 4 divisors (see below), whose sum is σ = 128592564. Its totient is φ = 42864186.

The previous prime is 85728373. The next prime is 85728403. The reversal of 85728374 is 47382758.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47382758 = 2 ⋅23691379.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85728373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21432092 + ... + 21432095.

It is an arithmetic number, because the mean of its divisors is an integer number (32148141).

Almost surely, 2^85728374 is an apocalyptic number.

85728374 is a deficient number, since it is larger than the sum of its proper divisors (42864190).

85728374 is a wasteful number, since it uses less digits than its factorization.

85728374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42864189.

The product of its digits is 376320, while the sum is 44.

The square root of 85728374 is about 9258.9618208523. The cubic root of 85728374 is about 440.9352935265.

The spelling of 85728374 in words is "eighty-five million, seven hundred twenty-eight thousand, three hundred seventy-four".