228297663 has 32 divisors (see below), whose sum is σ = 369868800. Its totient is φ = 138024000.

The previous prime is 228297649. The next prime is 228297679. The reversal of 228297663 is 366792822.

It is not a de Polignac number, because 228297663 - 2⁴ = 228297647 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228297463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177858 + ... + 179136.

It is an arithmetic number, because the mean of its divisors is an integer number (11558400).

Almost surely, 2^228297663 is an apocalyptic number.

228297663 is a deficient number, since it is larger than the sum of its proper divisors (141571137).

228297663 is a wasteful number, since it uses less digits than its factorization.

228297663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900 (or 1894 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 228297663 is about 15109.5222624675. The cubic root of 228297663 is about 611.1772151657.

The spelling of 228297663 in words is "two hundred twenty-eight million, two hundred ninety-seven thousand, six hundred sixty-three".