28364141 has 4 divisors (see below), whose sum is σ = 30546012. Its totient is φ = 26182272.

The previous prime is 28364113. The next prime is 28364153. The reversal of 28364141 is 14146382.

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 13764100 + 14600041 = 3710^2 + 3821^2 .

It is a cyclic number.

It is not a de Polignac number, because 28364141 - 2¹⁴ = 28347757 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 (28361141) 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, 1090916 + ... + 1090941.

It is an arithmetic number, because the mean of its divisors is an integer number (7636503).

Almost surely, 2^28364141 is an apocalyptic number.

It is an amenable number.

28364141 is a deficient number, since it is larger than the sum of its proper divisors (2181871).

28364141 is a wasteful number, since it uses less digits than its factorization.

28364141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181870.

The product of its digits is 4608, while the sum is 29.

The square root of 28364141 is about 5325.7995643847. The cubic root of 28364141 is about 304.9695965394.

The spelling of 28364141 in words is "twenty-eight million, three hundred sixty-four thousand, one hundred forty-one".