28558214 has 16 divisors (see below), whose sum is σ = 44982000. Its totient is φ = 13579104.

The previous prime is 28558199. The next prime is 28558219. The reversal of 28558214 is 41285582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28558219) 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, 212 + ... + 7560.

It is an arithmetic number, because the mean of its divisors is an integer number (2811375).

Almost surely, 2^28558214 is an apocalyptic number.

28558214 is a deficient number, since it is larger than the sum of its proper divisors (16423786).

28558214 is a wasteful number, since it uses less digits than its factorization.

28558214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its digits is 25600, while the sum is 35.

The square root of 28558214 is about 5343.9885853172. The cubic root of 28558214 is about 305.6635700448.

The spelling of 28558214 in words is "twenty-eight million, five hundred fifty-eight thousand, two hundred fourteen".