28586133 has 12 divisors (see below), whose sum is σ = 42070860. Its totient is φ = 18697536.

The previous prime is 28586119. The next prime is 28586137. The reversal of 28586133 is 33168582.

It can be written as a sum of positive squares in 2 ways, for example, as 10284849 + 18301284 = 3207^2 + 4278^2 .

It is not a de Polignac number, because 28586133 - 2⁵ = 28586101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28586137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29488 + ... + 30441.

It is an arithmetic number, because the mean of its divisors is an integer number (3505905).

Almost surely, 2^28586133 is an apocalyptic number.

It is an amenable number.

28586133 is a deficient number, since it is larger than the sum of its proper divisors (13484727).

28586133 is a wasteful number, since it uses less digits than its factorization.

28586133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59988 (or 59985 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 28586133 is about 5346.6001346650. The cubic root of 28586133 is about 305.7631449200.

The spelling of 28586133 in words is "twenty-eight million, five hundred eighty-six thousand, one hundred thirty-three".