28540895 has 4 divisors (see below), whose sum is σ = 34249080. Its totient is φ = 22832712.

The previous prime is 28540849. The next prime is 28540921. The reversal of 28540895 is 59804582.

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

It is a cyclic number.

It is not a de Polignac number, because 28540895 - 2¹⁸ = 28278751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854085 + ... + 2854094.

It is an arithmetic number, because the mean of its divisors is an integer number (8562270).

Almost surely, 2^28540895 is an apocalyptic number.

28540895 is a deficient number, since it is larger than the sum of its proper divisors (5708185).

28540895 is an equidigital number, since it uses as much as digits as its factorization.

28540895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708184.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 28540895 is about 5342.3679206884. The cubic root of 28540895 is about 305.6017681191.

The spelling of 28540895 in words is "twenty-eight million, five hundred forty thousand, eight hundred ninety-five".