28407617 has 8 divisors (see below), whose sum is σ = 33585600. Its totient is φ = 23509584.

The previous prime is 28407611. The next prime is 28407619. The reversal of 28407617 is 71670482.

It is a happy number.

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

It is not a de Polignac number, because 28407617 - 2²⁴ = 11630401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28407611) 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 7 ways as a sum of consecutive naturals, for example, 69767 + ... + 70172.

It is an arithmetic number, because the mean of its divisors is an integer number (4198200).

Almost surely, 2^28407617 is an apocalyptic number.

It is an amenable number.

28407617 is a deficient number, since it is larger than the sum of its proper divisors (5177983).

28407617 is a wasteful number, since it uses less digits than its factorization.

28407617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139975.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 28407617 is about 5329.8796421683. The cubic root of 28407617 is about 305.1253341382.

The spelling of 28407617 in words is "twenty-eight million, four hundred seven thousand, six hundred seventeen".