28608842 has 4 divisors (see below), whose sum is σ = 42913266. Its totient is φ = 14304420.

The previous prime is 28608809. The next prime is 28608863. The reversal of 28608842 is 24880682.

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

It can be written as a sum of positive squares in only one way, i.e., 19722481 + 8886361 = 4441^2 + 2981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28608796 and 28608805.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7152209 + ... + 7152212.

Almost surely, 2^28608842 is an apocalyptic number.

28608842 is a deficient number, since it is larger than the sum of its proper divisors (14304424).

28608842 is a wasteful number, since it uses less digits than its factorization.

28608842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304423.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 28608842 is about 5348.7233990925. The cubic root of 28608842 is about 305.8440901974.

The spelling of 28608842 in words is "twenty-eight million, six hundred eight thousand, eight hundred forty-two".