228888065 has 48 divisors (see below), whose sum is σ = 336856320. Its totient is φ = 148579200.

The previous prime is 228888061. The next prime is 228888071. The reversal of 228888065 is 560888822.

228888065 = 365² + 366² + ... + 902².

It is not a de Polignac number, because 228888065 - 2² = 228888061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228888061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 850751 + ... + 851019.

It is an arithmetic number, because the mean of its divisors is an integer number (7017840).

Almost surely, 2^228888065 is an apocalyptic number.

It is an amenable number.

228888065 is a deficient number, since it is larger than the sum of its proper divisors (107968255).

228888065 is a wasteful number, since it uses less digits than its factorization.

228888065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 228888065 is about 15129.0470618608. The cubic root of 228888065 is about 611.7036180419.

The spelling of 228888065 in words is "two hundred twenty-eight million, eight hundred eighty-eight thousand, sixty-five".