28370017 has 16 divisors (see below), whose sum is σ = 32094720. Its totient is φ = 24881472.

The previous prime is 28369997. The next prime is 28370029. The reversal of 28370017 is 71007382.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28370017 - 2¹⁹ = 27845729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28370077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71263 + ... + 71659.

It is an arithmetic number, because the mean of its divisors is an integer number (2005920).

Almost surely, 2^28370017 is an apocalyptic number.

It is an amenable number.

28370017 is a deficient number, since it is larger than the sum of its proper divisors (3724703).

28370017 is a wasteful number, since it uses less digits than its factorization.

28370017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 28370017 is about 5326.3511900737. The cubic root of 28370017 is about 304.9906545555.

Adding to 28370017 its reverse (71007382), we get a palindrome (99377399).

The spelling of 28370017 in words is "twenty-eight million, three hundred seventy thousand, seventeen".