28556103 has 4 divisors (see below), whose sum is σ = 38074808. Its totient is φ = 19037400.

The previous prime is 28556093. The next prime is 28556123. The reversal of 28556103 is 30165582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28556103 - 2¹⁷ = 28425031 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 (28556123) 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, 4759348 + ... + 4759353.

It is an arithmetic number, because the mean of its divisors is an integer number (9518702).

Almost surely, 2^28556103 is an apocalyptic number.

28556103 is a deficient number, since it is larger than the sum of its proper divisors (9518705).

28556103 is an equidigital number, since it uses as much as digits as its factorization.

28556103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518704.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 28556103 is about 5343.7910700176. The cubic root of 28556103 is about 305.6560383915.

The spelling of 28556103 in words is "twenty-eight million, five hundred fifty-six thousand, one hundred three".