28496447 has 8 divisors (see below), whose sum is σ = 34281600. Its totient is φ = 23139864.

The previous prime is 28496441. The next prime is 28496467. The reversal of 28496447 is 74469482.

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 28496447 - 2⁴ = 28496431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28496398 and 28496407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28496441) 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, 106997 + ... + 107262.

It is an arithmetic number, because the mean of its divisors is an integer number (4285200).

Almost surely, 2^28496447 is an apocalyptic number.

28496447 is a deficient number, since it is larger than the sum of its proper divisors (5785153).

28496447 is a wasteful number, since it uses less digits than its factorization.

28496447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214285.

The product of its digits is 387072, while the sum is 44.

The square root of 28496447 is about 5338.2063467049. The cubic root of 28496447 is about 305.4430433041.

The spelling of 28496447 in words is "twenty-eight million, four hundred ninety-six thousand, four hundred forty-seven".