28241549 has 4 divisors (see below), whose sum is σ = 32276064. Its totient is φ = 24207036.

The previous prime is 28241533. The next prime is 28241557. The reversal of 28241549 is 94514282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28241549 - 2⁴ = 28241533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28241509) 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, 2017247 + ... + 2017260.

It is an arithmetic number, because the mean of its divisors is an integer number (8069016).

Almost surely, 2^28241549 is an apocalyptic number.

It is an amenable number.

28241549 is a deficient number, since it is larger than the sum of its proper divisors (4034515).

28241549 is an equidigital number, since it uses as much as digits as its factorization.

28241549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034514.

The product of its digits is 23040, while the sum is 35.

The square root of 28241549 is about 5314.2778436962. The cubic root of 28241549 is about 304.5295946674.

The spelling of 28241549 in words is "twenty-eight million, two hundred forty-one thousand, five hundred forty-nine".