28447853 has 8 divisors (see below), whose sum is σ = 33063360. Its totient is φ = 23970240.

The previous prime is 28447847. The next prime is 28447889. The reversal of 28447853 is 35874482.

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

It is not a de Polignac number, because 28447853 - 2⁶ = 28447789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28447853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28447813) 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, 34028 + ... + 34853.

It is an arithmetic number, because the mean of its divisors is an integer number (4132920).

Almost surely, 2^28447853 is an apocalyptic number.

It is an amenable number.

28447853 is a deficient number, since it is larger than the sum of its proper divisors (4615507).

28447853 is an equidigital number, since it uses as much as digits as its factorization.

28447853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68947.

The product of its digits is 215040, while the sum is 41.

The square root of 28447853 is about 5333.6528758441. The cubic root of 28447853 is about 305.2693240546.

The spelling of 28447853 in words is "twenty-eight million, four hundred forty-seven thousand, eight hundred fifty-three".