28588238 has 8 divisors (see below), whose sum is σ = 49008432. Its totient is φ = 12252096.

The previous prime is 28588223. The next prime is 28588243. The reversal of 28588238 is 83288582.

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

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, 1020995 + ... + 1021022.

It is an arithmetic number, because the mean of its divisors is an integer number (6126054).

Almost surely, 2^28588238 is an apocalyptic number.

28588238 is a deficient number, since it is larger than the sum of its proper divisors (20420194).

28588238 is a wasteful number, since it uses less digits than its factorization.

28588238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042026.

The product of its digits is 245760, while the sum is 44.

The square root of 28588238 is about 5346.7969851117. The cubic root of 28588238 is about 305.7706499064.

The spelling of 28588238 in words is "twenty-eight million, five hundred eighty-eight thousand, two hundred thirty-eight".