228397655 has 16 divisors (see below), whose sum is σ = 280739424. Its totient is φ = 178329600.

The previous prime is 228397627. The next prime is 228397661. The reversal of 228397655 is 556793822.

It is not a de Polignac number, because 228397655 - 2⁸ = 228397399 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

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, 32180 + ... + 38630.

It is an arithmetic number, because the mean of its divisors is an integer number (17546214).

Almost surely, 2^228397655 is an apocalyptic number.

228397655 is a deficient number, since it is larger than the sum of its proper divisors (52341769).

228397655 is an equidigital number, since it uses as much as digits as its factorization.

228397655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626.

The product of its digits is 907200, while the sum is 47.

The square root of 228397655 is about 15112.8308069666. The cubic root of 228397655 is about 611.2664318945.

The spelling of 228397655 in words is "two hundred twenty-eight million, three hundred ninety-seven thousand, six hundred fifty-five".