28582838 has 4 divisors (see below), whose sum is σ = 42874260. Its totient is φ = 14291418.

The previous prime is 28582789. The next prime is 28582861. The reversal of 28582838 is 83828582.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×28582838³ (a number of 23 digits) contains 333 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 as a sum of consecutive naturals, namely, 7145708 + ... + 7145711.

It is an arithmetic number, because the mean of its divisors is an integer number (10718565).

Almost surely, 2^28582838 is an apocalyptic number.

28582838 is a deficient number, since it is larger than the sum of its proper divisors (14291422).

28582838 is a wasteful number, since it uses less digits than its factorization.

28582838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14291421.

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

The square root of 28582838 is about 5346.2919860404. The cubic root of 28582838 is about 305.7513964699.

The spelling of 28582838 in words is "twenty-eight million, five hundred eighty-two thousand, eight hundred thirty-eight".