28047417 has 8 divisors (see below), whose sum is σ = 37423200. Its totient is φ = 18684960.

The previous prime is 28047413. The next prime is 28047421. The reversal of 28047417 is 71474082.

It is an interprime number because it is at equal distance from previous prime (28047413) and next prime (28047421).

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

It is not a de Polignac number, because 28047417 - 2² = 28047413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28047413) 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, 3709 + ... + 8357.

It is an arithmetic number, because the mean of its divisors is an integer number (4677900).

Almost surely, 2^28047417 is an apocalyptic number.

It is an amenable number.

28047417 is a deficient number, since it is larger than the sum of its proper divisors (9375783).

28047417 is a wasteful number, since it uses less digits than its factorization.

28047417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 28047417 is about 5295.9812122023. The cubic root of 28047417 is about 303.8302123510.

The spelling of 28047417 in words is "twenty-eight million, forty-seven thousand, four hundred seventeen".