228161065 has 16 divisors (see below), whose sum is σ = 299033856. Its totient is φ = 165740800.

The previous prime is 228161051. The next prime is 228161071. The reversal of 228161065 is 560161822.

It is not a de Polignac number, because 228161065 - 2⁷ = 228160937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58785 + ... + 62545.

It is an arithmetic number, because the mean of its divisors is an integer number (18689616).

Almost surely, 2^228161065 is an apocalyptic number.

It is an amenable number.

228161065 is a deficient number, since it is larger than the sum of its proper divisors (70872791).

228161065 is a wasteful number, since it uses less digits than its factorization.

228161065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 228161065 is about 15105.0013240648. The cubic root of 228161065 is about 611.0552950369.

The spelling of 228161065 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, sixty-five".