28048481 has 8 divisors (see below), whose sum is σ = 29104680. Its totient is φ = 26998272.

The previous prime is 28048451. The next prime is 28048483. The reversal of 28048481 is 18484082.

It can be written as a sum of positive squares in 4 ways, for example, as 5958481 + 22090000 = 2441^2 + 4700^2 .

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 28048481 - 2⁶ = 28048417 is a prime.

It is a super-2 number, since 2×28048481² = 1573434572814722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28048483) 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, 9521 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (3638085).

Almost surely, 2^28048481 is an apocalyptic number.

It is an amenable number.

28048481 is a deficient number, since it is larger than the sum of its proper divisors (1056199).

28048481 is a wasteful number, since it uses less digits than its factorization.

28048481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995.

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 28048481 is about 5296.0816647782. The cubic root of 28048481 is about 303.8340543122.

The spelling of 28048481 in words is "twenty-eight million, forty-eight thousand, four hundred eighty-one".