28347165 has 112 divisors (see below), whose sum is σ = 64215936. Its totient is φ = 11664000.

The previous prime is 28347139. The next prime is 28347173. The reversal of 28347165 is 56174382.

It is not a de Polignac number, because 28347165 - 2⁵ = 28347133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 280615 + ... + 280715.

Almost surely, 2^28347165 is an apocalyptic number.

It is an amenable number.

28347165 is an abundant number, since it is smaller than the sum of its proper divisors (35868771).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28347165 is a wasteful number, since it uses less digits than its factorization.

28347165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 127 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 28347165 is about 5324.2055745435. The cubic root of 28347165 is about 304.9087427421.

It can be divided in two parts, 2834 and 7165, that added together give a palindrome (9999).

The spelling of 28347165 in words is "twenty-eight million, three hundred forty-seven thousand, one hundred sixty-five".