104028091 has 4 divisors (see below), whose sum is σ = 104105232. Its totient is φ = 103950952.

The previous prime is 104028079. The next prime is 104028101. The reversal of 104028091 is 190820401.

It is a happy number.

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 104028091 - 2¹⁷ = 103897019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104028031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36511 + ... + 39256.

It is an arithmetic number, because the mean of its divisors is an integer number (26026308).

Almost surely, 2^104028091 is an apocalyptic number.

104028091 is a deficient number, since it is larger than the sum of its proper divisors (77141).

104028091 is an equidigital number, since it uses as much as digits as its factorization.

104028091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77140.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 104028091 is about 10199.4162087837. The cubic root of 104028091 is about 470.3092743369.

Adding to 104028091 its reverse (190820401), we get a palindrome (294848492).

The spelling of 104028091 in words is "one hundred four million, twenty-eight thousand, ninety-one".