228181065 has 16 divisors (see below), whose sum is σ = 417245568. Its totient is φ = 104311296.

The previous prime is 228181039. The next prime is 228181067. The reversal of 228181065 is 560181822.

It is not a de Polignac number, because 228181065 - 2⁶ = 228181001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228181067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086472 + ... + 1086681.

It is an arithmetic number, because the mean of its divisors is an integer number (26077848).

Almost surely, 2^228181065 is an apocalyptic number.

It is an amenable number.

228181065 is a deficient number, since it is larger than the sum of its proper divisors (189064503).

228181065 is a wasteful number, since it uses less digits than its factorization.

228181065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173168.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 228181065 is about 15105.6633419390. The cubic root of 228181065 is about 611.0731490162.

The spelling of 228181065 in words is "two hundred twenty-eight million, one hundred eighty-one thousand, sixty-five".