28140801 has 16 divisors (see below), whose sum is σ = 41395200. Its totient is φ = 16894080.

The previous prime is 28140793. The next prime is 28140803. The reversal of 28140801 is 10804182.

It is not a de Polignac number, because 28140801 - 2³ = 28140793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28140803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7201 + ... + 10398.

It is an arithmetic number, because the mean of its divisors is an integer number (2587200).

Almost surely, 2^28140801 is an apocalyptic number.

It is an amenable number.

28140801 is a deficient number, since it is larger than the sum of its proper divisors (13254399).

28140801 is a wasteful number, since it uses less digits than its factorization.

28140801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17656.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 28140801 is about 5304.7903822866. The cubic root of 28140801 is about 304.1670401530.

Adding to 28140801 its reverse (10804182), we get a palindrome (38944983).

The spelling of 28140801 in words is "twenty-eight million, one hundred forty thousand, eight hundred one".