28084141 has 4 divisors (see below), whose sum is σ = 28239484. Its totient is φ = 27928800.

The previous prime is 28084103. The next prime is 28084157. The reversal of 28084141 is 14148082.

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 8468100 + 19616041 = 2910^2 + 4429^2 .

It is a cyclic number.

It is not a de Polignac number, because 28084141 - 2⁷ = 28084013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28084181) 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, 77400 + ... + 77761.

It is an arithmetic number, because the mean of its divisors is an integer number (7059871).

Almost surely, 2^28084141 is an apocalyptic number.

It is an amenable number.

28084141 is a deficient number, since it is larger than the sum of its proper divisors (155343).

28084141 is a wasteful number, since it uses less digits than its factorization.

28084141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155342.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 28084141 is about 5299.4472353256. The cubic root of 28084141 is about 303.9627616264.

The spelling of 28084141 in words is "twenty-eight million, eighty-four thousand, one hundred forty-one".