28533158 has 8 divisors (see below), whose sum is σ = 44275680. Its totient is φ = 13774600.

The previous prime is 28533121. The next prime is 28533173. The reversal of 28533158 is 85133582.

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

It is a super-2 number, since 2×28533158² = 1628282210905928, which contains 22 as substring.

It is a congruent number.

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, 245918 + ... + 246033.

It is an arithmetic number, because the mean of its divisors is an integer number (5534460).

Almost surely, 2^28533158 is an apocalyptic number.

28533158 is a deficient number, since it is larger than the sum of its proper divisors (15742522).

28533158 is a wasteful number, since it uses less digits than its factorization.

28533158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491982.

The product of its digits is 28800, while the sum is 35.

The square root of 28533158 is about 5341.6437545010. The cubic root of 28533158 is about 305.5741509687.

The spelling of 28533158 in words is "twenty-eight million, five hundred thirty-three thousand, one hundred fifty-eight".