28879538 has 8 divisors (see below), whose sum is σ = 44716800. Its totient is φ = 13973940.

The previous prime is 28879517. The next prime is 28879561. The reversal of 28879538 is 83597882.

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

It is a Curzon 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, 232838 + ... + 232961.

It is an arithmetic number, because the mean of its divisors is an integer number (5589600).

Almost surely, 2^28879538 is an apocalyptic number.

28879538 is a deficient number, since it is larger than the sum of its proper divisors (15837262).

28879538 is a wasteful number, since it uses less digits than its factorization.

28879538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465832.

The product of its digits is 967680, while the sum is 50.

The square root of 28879538 is about 5373.9685521968. The cubic root of 28879538 is about 306.8056928446.

The spelling of 28879538 in words is "twenty-eight million, eight hundred seventy-nine thousand, five hundred thirty-eight".