228404663 has 16 divisors (see below), whose sum is σ = 240392256. Its totient is φ = 216794880.

The previous prime is 228404611. The next prime is 228404677. The reversal of 228404663 is 366404822.

It is a cyclic number.

It is not a de Polignac number, because 228404663 - 2⁶ = 228404599 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228424663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277793 + ... + 278613.

It is an arithmetic number, because the mean of its divisors is an integer number (15024516).

Almost surely, 2^228404663 is an apocalyptic number.

228404663 is a deficient number, since it is larger than the sum of its proper divisors (11987593).

228404663 is a wasteful number, since it uses less digits than its factorization.

228404663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 228404663 is about 15113.0626611551. The cubic root of 228404663 is about 611.2726837265.

The spelling of 228404663 in words is "two hundred twenty-eight million, four hundred four thousand, six hundred sixty-three".