28895491 has 4 divisors (see below), whose sum is σ = 28907032. Its totient is φ = 28883952.

The previous prime is 28895473. The next prime is 28895507. The reversal of 28895491 is 19459882.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28895491 - 2¹⁷ = 28764419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28895401) 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, 261 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (7226758).

Almost surely, 2^28895491 is an apocalyptic number.

28895491 is a deficient number, since it is larger than the sum of its proper divisors (11541).

28895491 is an equidigital number, since it uses as much as digits as its factorization.

28895491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11540.

The product of its digits is 207360, while the sum is 46.

The square root of 28895491 is about 5375.4526321046. The cubic root of 28895491 is about 306.8621753994.

The spelling of 28895491 in words is "twenty-eight million, eight hundred ninety-five thousand, four hundred ninety-one".