28660026 has 8 divisors (see below), whose sum is σ = 57320064. Its totient is φ = 9553340.

The previous prime is 28660003. The next prime is 28660031. The reversal of 28660026 is 62006682.

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

28660026 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28659975 and 28660002.

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, 2388330 + ... + 2388341.

It is an arithmetic number, because the mean of its divisors is an integer number (7165008).

Almost surely, 2^28660026 is an apocalyptic number.

28660026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28660026 is a wasteful number, since it uses less digits than its factorization.

28660026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776676.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28660026 is about 5353.5059540454. The cubic root of 28660026 is about 306.0263764696.

The spelling of 28660026 in words is "twenty-eight million, six hundred sixty thousand, twenty-six".