28448711 has 4 divisors (see below), whose sum is σ = 29142624. Its totient is φ = 27754800.

The previous prime is 28448699. The next prime is 28448741. The reversal of 28448711 is 11784482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28448711 - 2¹⁰ = 28447687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346895 + ... + 346976.

It is an arithmetic number, because the mean of its divisors is an integer number (7285656).

Almost surely, 2^28448711 is an apocalyptic number.

28448711 is a deficient number, since it is larger than the sum of its proper divisors (693913).

28448711 is an equidigital number, since it uses as much as digits as its factorization.

28448711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693912.

The product of its digits is 14336, while the sum is 35.

The square root of 28448711 is about 5333.7333079186. The cubic root of 28448711 is about 305.2723930436.

The spelling of 28448711 in words is "twenty-eight million, four hundred forty-eight thousand, seven hundred eleven".