28693185 has 8 divisors (see below), whose sum is σ = 45909120. Its totient is φ = 15303024.

The previous prime is 28693139. The next prime is 28693199. The reversal of 28693185 is 58139682.

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

It is not a de Polignac number, because 28693185 - 2⁸ = 28692929 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 956425 + ... + 956454.

It is an arithmetic number, because the mean of its divisors is an integer number (5738640).

Almost surely, 2^28693185 is an apocalyptic number.

It is an amenable number.

28693185 is a deficient number, since it is larger than the sum of its proper divisors (17215935).

28693185 is a wasteful number, since it uses less digits than its factorization.

28693185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912887.

The product of its digits is 103680, while the sum is 42.

The square root of 28693185 is about 5356.6020012691. The cubic root of 28693185 is about 306.1443528413.

The spelling of 28693185 in words is "twenty-eight million, six hundred ninety-three thousand, one hundred eighty-five".