28379165 has 4 divisors (see below), whose sum is σ = 34055004. Its totient is φ = 22703328.

The previous prime is 28379161. The next prime is 28379207. The reversal of 28379165 is 56197382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5692996 + 22686169 = 2386^2 + 4763^2 .

It is a cyclic number.

It is not a de Polignac number, because 28379165 - 2² = 28379161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28379161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2837912 + ... + 2837921.

It is an arithmetic number, because the mean of its divisors is an integer number (8513751).

Almost surely, 2^28379165 is an apocalyptic number.

It is an amenable number.

28379165 is a deficient number, since it is larger than the sum of its proper divisors (5675839).

28379165 is an equidigital number, since it uses as much as digits as its factorization.

28379165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5675838.

The product of its digits is 90720, while the sum is 41.

The square root of 28379165 is about 5327.2098700915. The cubic root of 28379165 is about 305.0234327602.

The spelling of 28379165 in words is "twenty-eight million, three hundred seventy-nine thousand, one hundred sixty-five".