28036001 has 16 divisors (see below), whose sum is σ = 33893760. Its totient is φ = 22654080.

The previous prime is 28035971. The next prime is 28036003. The reversal of 28036001 is 10063082.

28036001 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 28036001 - 2¹⁰ = 28034977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28036003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36461 + ... + 37221.

It is an arithmetic number, because the mean of its divisors is an integer number (2118360).

Almost surely, 2^28036001 is an apocalyptic number.

It is an amenable number.

28036001 is a deficient number, since it is larger than the sum of its proper divisors (5857759).

28036001 is a wasteful number, since it uses less digits than its factorization.

28036001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 28036001 is about 5294.9033041218. The cubic root of 28036001 is about 303.7889845925.

Adding to 28036001 its reverse (10063082), we get a palindrome (38099083).

The spelling of 28036001 in words is "twenty-eight million, thirty-six thousand, one".