228735785 has 8 divisors (see below), whose sum is σ = 277567560. Its totient is φ = 180932224.

The previous prime is 228735779. The next prime is 228735821. The reversal of 228735785 is 587537822.

It is a happy number.

228735785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12880921 + 215854864 = 3589^2 + 14692^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 228735785 - 2⁴ = 228735769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256562 + ... + 257451.

It is an arithmetic number, because the mean of its divisors is an integer number (34695945).

Almost surely, 2^228735785 is an apocalyptic number.

It is an amenable number.

228735785 is a deficient number, since it is larger than the sum of its proper divisors (48831775).

228735785 is an equidigital number, since it uses as much as digits as its factorization.

228735785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514107.

The product of its digits is 940800, while the sum is 47.

The square root of 228735785 is about 15124.0135215491. The cubic root of 228735785 is about 611.5679317880.

The spelling of 228735785 in words is "two hundred twenty-eight million, seven hundred thirty-five thousand, seven hundred eighty-five".