28892785 has 8 divisors (see below), whose sum is σ = 34752960. Its totient is φ = 23059824.

The previous prime is 28892753. The next prime is 28892789. The reversal of 28892785 is 58729882.

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

It is a cyclic number.

It is not a de Polignac number, because 28892785 - 2⁵ = 28892753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28892789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4387 + ... + 8776.

It is an arithmetic number, because the mean of its divisors is an integer number (4344120).

Almost surely, 2^28892785 is an apocalyptic number.

It is an amenable number.

28892785 is a deficient number, since it is larger than the sum of its proper divisors (5860175).

28892785 is a wasteful number, since it uses less digits than its factorization.

28892785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13607.

The product of its digits is 645120, while the sum is 49.

The square root of 28892785 is about 5375.2009264771. The cubic root of 28892785 is about 306.8525961082.

The spelling of 28892785 in words is "twenty-eight million, eight hundred ninety-two thousand, seven hundred eighty-five".