228897865 has 12 divisors (see below), whose sum is σ = 319523076. Its totient is φ = 156958368.

The previous prime is 228897853. The next prime is 228897871. The reversal of 228897865 is 568798822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30735936 + 198161929 = 5544^2 + 14077^2 .

It is not a de Polignac number, because 228897865 - 2⁷ = 228897737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 466894 + ... + 467383.

It is an arithmetic number, because the mean of its divisors is an integer number (26626923).

Almost surely, 2^228897865 is an apocalyptic number.

It is an amenable number.

228897865 is a deficient number, since it is larger than the sum of its proper divisors (90625211).

228897865 is an equidigital number, since it uses as much as digits as its factorization.

228897865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934296 (or 934289 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The square root of 228897865 is about 15129.3709386742. The cubic root of 228897865 is about 611.7123480877.

The spelling of 228897865 in words is "two hundred twenty-eight million, eight hundred ninety-seven thousand, eight hundred sixty-five".