28495105 has 4 divisors (see below), whose sum is σ = 34194132. Its totient is φ = 22796080.

The previous prime is 28495087. The next prime is 28495109. The reversal of 28495105 is 50159482.

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 14447601 + 14047504 = 3801^2 + 3748^2 .

It is not a de Polignac number, because 28495105 - 2⁵ = 28495073 is a prime.

It is a super-2 number, since 2×28495105² = 1623942017922050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28495109) 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 3 ways as a sum of consecutive naturals, for example, 2849506 + ... + 2849515.

It is an arithmetic number, because the mean of its divisors is an integer number (8548533).

Almost surely, 2^28495105 is an apocalyptic number.

It is an amenable number.

28495105 is a deficient number, since it is larger than the sum of its proper divisors (5699027).

28495105 is an equidigital number, since it uses as much as digits as its factorization.

28495105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5699026.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 28495105 is about 5338.0806475736. The cubic root of 28495105 is about 305.4382484257.

The spelling of 28495105 in words is "twenty-eight million, four hundred ninety-five thousand, one hundred five".