85878534 has 32 divisors (see below), whose sum is σ = 197625600. Its totient is φ = 24370272.

The previous prime is 85878511. The next prime is 85878539. The reversal of 85878534 is 43587858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85878539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (6175800).

Almost surely, 2^85878534 is an apocalyptic number.

85878534 is an abundant number, since it is smaller than the sum of its proper divisors (111747066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85878534 is a wasteful number, since it uses less digits than its factorization.

85878534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884.

The product of its digits is 1075200, while the sum is 48.

The square root of 85878534 is about 9267.0671735992. The cubic root of 85878534 is about 441.1925876611.

The spelling of 85878534 in words is "eighty-five million, eight hundred seventy-eight thousand, five hundred thirty-four".