28589258 has 8 divisors (see below), whose sum is σ = 42984228. Its totient is φ = 14261184.

The previous prime is 28589237. The next prime is 28589261. The reversal of 28589258 is 85298582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24275329 + 4313929 = 4927^2 + 2077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15641 + ... + 17372.

Almost surely, 2^28589258 is an apocalyptic number.

28589258 is a deficient number, since it is larger than the sum of its proper divisors (14394970).

28589258 is a wasteful number, since it uses less digits than its factorization.

28589258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33448.

The product of its digits is 460800, while the sum is 47.

The square root of 28589258 is about 5346.8923684697. The cubic root of 28589258 is about 305.7742863944.

The spelling of 28589258 in words is "twenty-eight million, five hundred eighty-nine thousand, two hundred fifty-eight".