28041299 has 16 divisors (see below), whose sum is σ = 33180000. Its totient is φ = 23362560.

The previous prime is 28041269. The next prime is 28041311. The reversal of 28041299 is 99214082.

It is not a de Polignac number, because 28041299 - 2⁸ = 28041043 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28041269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21827 + ... + 23075.

It is an arithmetic number, because the mean of its divisors is an integer number (2073750).

Almost surely, 2^28041299 is an apocalyptic number.

28041299 is a deficient number, since it is larger than the sum of its proper divisors (5138701).

28041299 is a wasteful number, since it uses less digits than its factorization.

28041299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 28041299 is about 5295.4035729111. The cubic root of 28041299 is about 303.8081191887.

The spelling of 28041299 in words is "twenty-eight million, forty-one thousand, two hundred ninety-nine".