28085964 has 24 divisors (see below), whose sum is σ = 65689008. Its totient is φ = 9339840.

The previous prime is 28085963. The next prime is 28085987. The reversal of 28085964 is 46958082.

It is not an unprimeable number, because it can be changed into a prime (28085963) 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 7 ways as a sum of consecutive naturals, for example, 2994 + ... + 8070.

It is an arithmetic number, because the mean of its divisors is an integer number (2737042).

Almost surely, 2^28085964 is an apocalyptic number.

It is an amenable number.

28085964 is an abundant number, since it is smaller than the sum of its proper divisors (37603044).

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

28085964 is a wasteful number, since it uses less digits than its factorization.

28085964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545 (or 5543 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28085964 is about 5299.6192316052. The cubic root of 28085964 is about 303.9693384357.

The spelling of 28085964 in words is "twenty-eight million, eighty-five thousand, nine hundred sixty-four".