85428612 has 36 divisors (see below), whose sum is σ = 218050560. Its totient is φ = 28198512.

The previous prime is 85428571. The next prime is 85428613. The reversal of 85428612 is 21682458.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (85428613) 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 11 ways as a sum of consecutive naturals, for example, 7812 + ... + 15227.

It is an arithmetic number, because the mean of its divisors is an integer number (6056960).

Almost surely, 2^85428612 is an apocalyptic number.

It is an amenable number.

85428612 is an abundant number, since it is smaller than the sum of its proper divisors (132621948).

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

85428612 is a wasteful number, since it uses less digits than its factorization.

85428612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23152 (or 23147 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 85428612 is about 9242.7599774093. The cubic root of 85428612 is about 440.4207614196.

The spelling of 85428612 in words is "eighty-five million, four hundred twenty-eight thousand, six hundred twelve".