28604611 has 4 divisors (see below), whose sum is σ = 32690992. Its totient is φ = 24518232.

The previous prime is 28604581. The next prime is 28604627. The reversal of 28604611 is 11640682.

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 28604611 - 2⁵ = 28604579 is a prime.

It is a super-2 number, since 2×28604611² = 1636447540922642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28604611.

It is not an unprimeable number, because it can be changed into a prime (28604651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043180 + ... + 2043193.

It is an arithmetic number, because the mean of its divisors is an integer number (8172748).

Almost surely, 2^28604611 is an apocalyptic number.

28604611 is a deficient number, since it is larger than the sum of its proper divisors (4086381).

28604611 is an equidigital number, since it uses as much as digits as its factorization.

28604611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086380.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28604611 is about 5348.3278695308. The cubic root of 28604611 is about 305.8290122232.

The spelling of 28604611 in words is "twenty-eight million, six hundred four thousand, six hundred eleven".