28403041 has 4 divisors (see below), whose sum is σ = 28456084. Its totient is φ = 28350000.

The previous prime is 28403033. The next prime is 28403047. The reversal of 28403041 is 14030482.

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 9740641 + 18662400 = 3121^2 + 4320^2 .

It is a cyclic number.

It is not a de Polignac number, because 28403041 - 2³ = 28403033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28403047) 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, 25710 + ... + 26791.

It is an arithmetic number, because the mean of its divisors is an integer number (7114021).

Almost surely, 2^28403041 is an apocalyptic number.

It is an amenable number.

28403041 is a deficient number, since it is larger than the sum of its proper divisors (53043).

28403041 is an equidigital number, since it uses as much as digits as its factorization.

28403041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53042.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28403041 is about 5329.4503468932. The cubic root of 28403041 is about 305.1089497003.

The spelling of 28403041 in words is "twenty-eight million, four hundred three thousand, forty-one".