228161365 has 8 divisors (see below), whose sum is σ = 274320288. Its totient is φ = 182178000.

The previous prime is 228161327. The next prime is 228161389. The reversal of 228161365 is 563161822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228161365 - 2⁹ = 228160853 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 228161365.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 41011 + ... + 46240.

It is an arithmetic number, because the mean of its divisors is an integer number (34290036).

Almost surely, 2^228161365 is an apocalyptic number.

It is an amenable number.

228161365 is a deficient number, since it is larger than the sum of its proper divisors (46158923).

228161365 is an equidigital number, since it uses as much as digits as its factorization.

228161365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87779.

The product of its digits is 17280, while the sum is 34.

The square root of 228161365 is about 15105.0112545473. The cubic root of 228161365 is about 611.0555628543.

The spelling of 228161365 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, three hundred sixty-five".