28047103 has 4 divisors (see below), whose sum is σ = 32053840. Its totient is φ = 24040368.

The previous prime is 28047101. The next prime is 28047119. The reversal of 28047103 is 30174082.

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 28047103 - 2¹ = 28047101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28047101) 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, 2003358 + ... + 2003371.

It is an arithmetic number, because the mean of its divisors is an integer number (8013460).

Almost surely, 2^28047103 is an apocalyptic number.

28047103 is a deficient number, since it is larger than the sum of its proper divisors (4006737).

28047103 is an equidigital number, since it uses as much as digits as its factorization.

28047103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006736.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28047103 is about 5295.9515669991. The cubic root of 28047103 is about 303.8290785206.

The spelling of 28047103 in words is "twenty-eight million, forty-seven thousand, one hundred three".