85134478 has 32 divisors (see below), whose sum is σ = 157933440. Its totient is φ = 33838560.

The previous prime is 85134461. The next prime is 85134479. The reversal of 85134478 is 87443158.

It is a self number, because there is not a number n which added to its sum of digits gives 85134478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85134479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2400 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (4935420).

Almost surely, 2^85134478 is an apocalyptic number.

85134478 is a deficient number, since it is larger than the sum of its proper divisors (72798962).

85134478 is a wasteful number, since it uses less digits than its factorization.

85134478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712.

The product of its digits is 107520, while the sum is 40.

The square root of 85134478 is about 9226.8346685090. The cubic root of 85134478 is about 439.9147183201.

The spelling of 85134478 in words is "eighty-five million, one hundred thirty-four thousand, four hundred seventy-eight".