28858895 has 8 divisors (see below), whose sum is σ = 37294656. Its totient is φ = 21311136.

The previous prime is 28858889. The next prime is 28858901. The reversal of 28858895 is 59885882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28858889) and next prime (28858901).

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 28858895 - 2¹² = 28854799 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 221927 + ... + 222056.

It is an arithmetic number, because the mean of its divisors is an integer number (4661832).

Almost surely, 2^28858895 is an apocalyptic number.

28858895 is a deficient number, since it is larger than the sum of its proper divisors (8435761).

28858895 is a wasteful number, since it uses less digits than its factorization.

28858895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444001.

The product of its digits is 1843200, while the sum is 53.

The square root of 28858895 is about 5372.0475612191. The cubic root of 28858895 is about 306.7325741825.

The spelling of 28858895 in words is "twenty-eight million, eight hundred fifty-eight thousand, eight hundred ninety-five".