28759895 has 8 divisors (see below), whose sum is σ = 34691856. Its totient is φ = 22887936.

The previous prime is 28759891. The next prime is 28759897. The reversal of 28759895 is 59895782.

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 28759895 - 2² = 28759891 is a prime.

It is a super-2 number, since 2×28759895² = 1654263120822050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28759891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13937 + ... + 15866.

It is an arithmetic number, because the mean of its divisors is an integer number (4336482).

Almost surely, 2^28759895 is an apocalyptic number.

28759895 is a deficient number, since it is larger than the sum of its proper divisors (5931961).

28759895 is a wasteful number, since it uses less digits than its factorization.

28759895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30001.

The product of its digits is 1814400, while the sum is 53.

The square root of 28759895 is about 5362.8252815097. The cubic root of 28759895 is about 306.3814251966.

The spelling of 28759895 in words is "twenty-eight million, seven hundred fifty-nine thousand, eight hundred ninety-five".