28103041 has 4 divisors (see below), whose sum is σ = 28115284. Its totient is φ = 28090800.

The previous prime is 28103003. The next prime is 28103077. The reversal of 28103041 is 14030182.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 23280625 + 4822416 = 4825^2 + 2196^2 .

It is a 3-Lehmer number, since φ(28103041) divides (28103041-1)³.

It is a cyclic number.

It is not a de Polignac number, because 28103041 - 2⁷ = 28102913 is a prime.

It is a deceptive number, since it divides R_28103040.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28103741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1530 + ... + 7651.

It is an arithmetic number, because the mean of its divisors is an integer number (7028821).

Almost surely, 2^28103041 is an apocalyptic number.

28103041 is the 3061-st octagonal number.

It is an amenable number.

28103041 is a deficient number, since it is larger than the sum of its proper divisors (12243).

28103041 is an equidigital number, since it uses as much as digits as its factorization.

28103041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12242.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 28103041 is about 5301.2301402599. The cubic root of 28103041 is about 304.0309330539.

The spelling of 28103041 in words is "twenty-eight million, one hundred three thousand, forty-one".