28856953 has 8 divisors (see below), whose sum is σ = 30425120. Its totient is φ = 27293760.

The previous prime is 28856917. The next prime is 28856957. The reversal of 28856953 is 35965882.

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 28856953 - 2⁹ = 28856441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28856957) by changing a digit.

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, 21601 + ... + 22897.

It is an arithmetic number, because the mean of its divisors is an integer number (3803140).

Almost surely, 2^28856953 is an apocalyptic number.

It is an amenable number.

28856953 is a deficient number, since it is larger than the sum of its proper divisors (1568167).

28856953 is a wasteful number, since it uses less digits than its factorization.

28856953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487.

The product of its digits is 518400, while the sum is 46.

The square root of 28856953 is about 5371.8668077308. The cubic root of 28856953 is about 306.7256937155.

The spelling of 28856953 in words is "twenty-eight million, eight hundred fifty-six thousand, nine hundred fifty-three".