85128406 has 8 divisors (see below), whose sum is σ = 139301064. Its totient is φ = 38694720.

The previous prime is 85128403. The next prime is 85128413. The reversal of 85128406 is 60482158.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85128403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1934715 + ... + 1934758.

It is an arithmetic number, because the mean of its divisors is an integer number (17412633).

Almost surely, 2^85128406 is an apocalyptic number.

85128406 is a deficient number, since it is larger than the sum of its proper divisors (54172658).

85128406 is a wasteful number, since it uses less digits than its factorization.

85128406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869486.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 85128406 is about 9226.5056223903. The cubic root of 85128406 is about 439.9042594722.

The spelling of 85128406 in words is "eighty-five million, one hundred twenty-eight thousand, four hundred six".