28237201 has 2 divisors, whose sum is σ = 28237202. Its totient is φ = 28237200.

The previous prime is 28237171. The next prime is 28237243. The reversal of 28237201 is 10273282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 358801 = 5280^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 28237201 - 2⁷ = 28237073 is a prime.

It is not a weakly prime, because it can be changed into another prime (28237291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14118600 + 14118601.

It is an arithmetic number, because the mean of its divisors is an integer number (14118601).

Almost surely, 2^28237201 is an apocalyptic number.

It is an amenable number.

28237201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28237201 is an equidigital number, since it uses as much as digits as its factorization.

28237201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28237201 is about 5313.8687413221. The cubic root of 28237201 is about 304.5139656541.

The spelling of 28237201 in words is "twenty-eight million, two hundred thirty-seven thousand, two hundred one".