28859642 has 16 divisors (see below), whose sum is σ = 52384320. Its totient is φ = 11640768.

The previous prime is 28859629. The next prime is 28859671. The reversal of 28859642 is 24695882.

It is a junction number, because it is equal to n+sod(n) for n = 28859593 and 28859602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60392 + ... + 60867.

It is an arithmetic number, because the mean of its divisors is an integer number (3274020).

Almost surely, 2^28859642 is an apocalyptic number.

28859642 is a deficient number, since it is larger than the sum of its proper divisors (23524678).

28859642 is a wasteful number, since it uses less digits than its factorization.

28859642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121285.

The product of its digits is 276480, while the sum is 44.

The square root of 28859642 is about 5372.1170873316. The cubic root of 28859642 is about 306.7352207062.

The spelling of 28859642 in words is "twenty-eight million, eight hundred fifty-nine thousand, six hundred forty-two".