28558164 has 24 divisors (see below), whose sum is σ = 70555968. Its totient is φ = 8959360.

The previous prime is 28558163. The next prime is 28558171. The reversal of 28558164 is 46185582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28558163) 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, 69792 + ... + 70199.

It is an arithmetic number, because the mean of its divisors is an integer number (2939832).

Almost surely, 2^28558164 is an apocalyptic number.

It is an amenable number.

28558164 is an abundant number, since it is smaller than the sum of its proper divisors (41997804).

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

28558164 is a wasteful number, since it uses less digits than its factorization.

28558164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140015 (or 140013 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 28558164 is about 5343.9839071614. The cubic root of 28558164 is about 305.6633916584.

The spelling of 28558164 in words is "twenty-eight million, five hundred fifty-eight thousand, one hundred sixty-four".