85471238 has 4 divisors (see below), whose sum is σ = 128206860. Its totient is φ = 42735618.

The previous prime is 85471237. The next prime is 85471241. The reversal of 85471238 is 83217458.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85471237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21367808 + ... + 21367811.

It is an arithmetic number, because the mean of its divisors is an integer number (32051715).

Almost surely, 2^85471238 is an apocalyptic number.

85471238 is a deficient number, since it is larger than the sum of its proper divisors (42735622).

85471238 is a wasteful number, since it uses less digits than its factorization.

85471238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42735621.

The product of its digits is 53760, while the sum is 38.

The square root of 85471238 is about 9245.0656027959. The cubic root of 85471238 is about 440.4940009482.

The spelling of 85471238 in words is "eighty-five million, four hundred seventy-one thousand, two hundred thirty-eight".