28810201 has 16 divisors (see below), whose sum is σ = 34154496. Its totient is φ = 23790096.

The previous prime is 28810181. The next prime is 28810207. The reversal of 28810201 is 10201882.

It is a cyclic number.

It is not a de Polignac number, because 28810201 - 2¹⁵ = 28777433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28810207) 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 15 ways as a sum of consecutive naturals, for example, 21390 + ... + 22696.

It is an arithmetic number, because the mean of its divisors is an integer number (2134656).

Almost surely, 2^28810201 is an apocalyptic number.

It is an amenable number.

28810201 is a deficient number, since it is larger than the sum of its proper divisors (5344295).

28810201 is a wasteful number, since it uses less digits than its factorization.

28810201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 28810201 is about 5367.5134839141. The cubic root of 28810201 is about 306.5599590674.

The spelling of 28810201 in words is "twenty-eight million, eight hundred ten thousand, two hundred one".