85657238 has 8 divisors (see below), whose sum is σ = 128612640. Its totient is φ = 42786360.

The previous prime is 85657223. The next prime is 85657261. The reversal of 85657238 is 83275658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (16076580).

Almost surely, 2^85657238 is an apocalyptic number.

85657238 is a deficient number, since it is larger than the sum of its proper divisors (42955402).

85657238 is a wasteful number, since it uses less digits than its factorization.

85657238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42262.

The product of its digits is 403200, while the sum is 44.

The square root of 85657238 is about 9255.1195562240. The cubic root of 85657238 is about 440.8132994836.

The spelling of 85657238 in words is "eighty-five million, six hundred fifty-seven thousand, two hundred thirty-eight".