28448371 has 12 divisors (see below), whose sum is σ = 33180840. Its totient is φ = 24319680.

The previous prime is 28448369. The next prime is 28448417. The reversal of 28448371 is 17384482.

It is not a de Polignac number, because 28448371 - 2¹ = 28448369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28448371.

It is not an unprimeable number, because it can be changed into a prime (28448311) 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 11 ways as a sum of consecutive naturals, for example, 31851 + ... + 32731.

It is an arithmetic number, because the mean of its divisors is an integer number (2765070).

Almost surely, 2^28448371 is an apocalyptic number.

28448371 is a deficient number, since it is larger than the sum of its proper divisors (4732469).

28448371 is an equidigital number, since it uses as much as digits as its factorization.

28448371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1547 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 28448371 is about 5333.7014352136. The cubic root of 28448371 is about 305.2711769015.

The spelling of 28448371 in words is "twenty-eight million, four hundred forty-eight thousand, three hundred seventy-one".