28335001 has 4 divisors (see below), whose sum is σ = 29312100. Its totient is φ = 27357904.

The previous prime is 28334989. The next prime is 28335017. The reversal of 28335001 is 10053382.

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 6245001 + 22090000 = 2499^2 + 4700^2 .

It is not a de Polignac number, because 28335001 - 2²³ = 19946393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28335091) 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 3 ways as a sum of consecutive naturals, for example, 488506 + ... + 488563.

It is an arithmetic number, because the mean of its divisors is an integer number (7328025).

Almost surely, 2^28335001 is an apocalyptic number.

It is an amenable number.

28335001 is a deficient number, since it is larger than the sum of its proper divisors (977099).

28335001 is an equidigital number, since it uses as much as digits as its factorization.

28335001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977098.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 28335001 is about 5323.0631219252. The cubic root of 28335001 is about 304.8651235585.

Adding to 28335001 its reverse (10053382), we get a palindrome (38388383).

The spelling of 28335001 in words is "twenty-eight million, three hundred thirty-five thousand, one".