85834428 has 24 divisors (see below), whose sum is σ = 212062032. Its totient is φ = 26928384.

The previous prime is 85834423. The next prime is 85834447. The reversal of 85834428 is 82443858.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85834428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85834423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210175 + ... + 210582.

It is an arithmetic number, because the mean of its divisors is an integer number (8835918).

Almost surely, 2^85834428 is an apocalyptic number.

It is an amenable number.

85834428 is an abundant number, since it is smaller than the sum of its proper divisors (126227604).

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

85834428 is a wasteful number, since it uses less digits than its factorization.

85834428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420781 (or 420779 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The square root of 85834428 is about 9264.6871506813. The cubic root of 85834428 is about 441.1170446368.

The spelling of 85834428 in words is "eighty-five million, eight hundred thirty-four thousand, four hundred twenty-eight".