28281201 has 8 divisors (see below), whose sum is σ = 40608960. Its totient is φ = 17403792.

The previous prime is 28281181. The next prime is 28281259. The reversal of 28281201 is 10218282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28281201 - 2¹⁰ = 28280177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28281601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362541 + ... + 362618.

It is an arithmetic number, because the mean of its divisors is an integer number (5076120).

Almost surely, 2^28281201 is an apocalyptic number.

It is an amenable number.

28281201 is a deficient number, since it is larger than the sum of its proper divisors (12327759).

28281201 is a wasteful number, since it uses less digits than its factorization.

28281201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725175.

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

The square root of 28281201 is about 5318.0072395588. The cubic root of 28281201 is about 304.6720509774.

Adding to 28281201 its reverse (10218282), we get a palindrome (38499483).

It can be divided in two parts, 28281 and 201, that added together give a palindrome (28482).

The spelling of 28281201 in words is "twenty-eight million, two hundred eighty-one thousand, two hundred one".