228009996 has 36 divisors (see below), whose sum is σ = 577122000. Its totient is φ = 75902688.

The previous prime is 228009983. The next prime is 228009997. The reversal of 228009996 is 699900822.

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

It is not an unprimeable number, because it can be changed into a prime (228009997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26430 + ... + 33978.

Almost surely, 2^228009996 is an apocalyptic number.

It is an amenable number.

228009996 is an abundant number, since it is smaller than the sum of its proper divisors (349112004).

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

228009996 is a wasteful number, since it uses less digits than its factorization.

228009996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398 (or 8393 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 228009996 is about 15099.9998675497. Note that the first 3 decimals coincide. The cubic root of 228009996 is about 610.9204021802.

The spelling of 228009996 in words is "two hundred twenty-eight million, nine thousand, nine hundred ninety-six".