228970211 has 4 divisors (see below), whose sum is σ = 231543000. Its totient is φ = 226397424.

The previous prime is 228970187. The next prime is 228970223. The reversal of 228970211 is 112079822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228970211 - 2¹⁰ = 228969187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228970241) 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 3 ways as a sum of consecutive naturals, for example, 1286261 + ... + 1286438.

It is an arithmetic number, because the mean of its divisors is an integer number (57885750).

Almost surely, 2^228970211 is an apocalyptic number.

228970211 is a deficient number, since it is larger than the sum of its proper divisors (2572789).

228970211 is an equidigital number, since it uses as much as digits as its factorization.

228970211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572788.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 228970211 is about 15131.7616621463. The cubic root of 228970211 is about 611.7767877159.

The spelling of 228970211 in words is "two hundred twenty-eight million, nine hundred seventy thousand, two hundred eleven".