28407717 has 36 divisors (see below), whose sum is σ = 46818720. Its totient is φ = 16544736.

The previous prime is 28407707. The next prime is 28407719. The reversal of 28407717 is 71770482.

It is not a de Polignac number, because 28407717 - 2⁶ = 28407653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28407719) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28408 + ... + 29390.

It is an arithmetic number, because the mean of its divisors is an integer number (1300520).

Almost surely, 2^28407717 is an apocalyptic number.

It is an amenable number.

28407717 is a deficient number, since it is larger than the sum of its proper divisors (18411003).

28407717 is a wasteful number, since it uses less digits than its factorization.

28407717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 28407717 is about 5329.8890232349. The cubic root of 28407717 is about 305.1256921701.

The spelling of 28407717 in words is "twenty-eight million, four hundred seven thousand, seven hundred seventeen".