228065508 has 36 divisors (see below), whose sum is σ = 628909008. Its totient is φ = 69110640.

The previous prime is 228065477. The next prime is 228065533. The reversal of 228065508 is 805560822.

228065508 is a `hidden beast` number, since 22 + 80 + 6 + 550 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287566 + ... + 288357.

Almost surely, 2^228065508 is an apocalyptic number.

It is an amenable number.

228065508 is an abundant number, since it is smaller than the sum of its proper divisors (400843500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228065508 is a wasteful number, since it uses less digits than its factorization.

228065508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575944 (or 575939 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 228065508 is about 15101.8379013947. The cubic root of 228065508 is about 610.9699769973.

The spelling of 228065508 in words is "two hundred twenty-eight million, sixty-five thousand, five hundred eight".