85128926 has 4 divisors (see below), whose sum is σ = 127693392. Its totient is φ = 42564462.

The previous prime is 85128919. The next prime is 85128943. The reversal of 85128926 is 62982158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62982158 = 2 ⋅31491079.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21282230 + ... + 21282233.

It is an arithmetic number, because the mean of its divisors is an integer number (31923348).

Almost surely, 2^85128926 is an apocalyptic number.

85128926 is a deficient number, since it is larger than the sum of its proper divisors (42564466).

85128926 is a wasteful number, since it uses less digits than its factorization.

85128926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42564465.

The product of its digits is 69120, while the sum is 41.

The square root of 85128926 is about 9226.5338020299. The cubic root of 85128926 is about 439.9051551769.

The spelling of 85128926 in words is "eighty-five million, one hundred twenty-eight thousand, nine hundred twenty-six".