228743065 has 8 divisors (see below), whose sum is σ = 281910600. Its totient is φ = 178048512.

The previous prime is 228743057. The next prime is 228743069. The reversal of 228743065 is 560347822.

It can be written as a sum of positive squares in 4 ways, for example, as 15904144 + 212838921 = 3988^2 + 14589^2 .

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 228743065 - 2³ = 228743057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (228743069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618040 + ... + 618409.

It is an arithmetic number, because the mean of its divisors is an integer number (35238825).

Almost surely, 2^228743065 is an apocalyptic number.

It is an amenable number.

228743065 is a deficient number, since it is larger than the sum of its proper divisors (53167535).

228743065 is a wasteful number, since it uses less digits than its factorization.

228743065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236491.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 228743065 is about 15124.2541964885. The cubic root of 228743065 is about 611.5744198667.

The spelling of 228743065 in words is "two hundred twenty-eight million, seven hundred forty-three thousand, sixty-five".