228617206650 has 672 divisors, whose sum is σ = 768173690880. Its totient is φ = 49468890240.

The previous prime is 228617206613. The next prime is 228617206669. The reversal of 228617206650 is 56602716822.

228617206650 is a `hidden beast` number, since 2 + 2 + 8 + 617 + 20 + 6 + 6 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 228617206596 and 228617206605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 956557231 + ... + 956557469.

Almost surely, 2^228617206650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228617206650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384086845440).

228617206650 is an abundant number, since it is smaller than the sum of its proper divisors (539556484230).

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

228617206650 is a wasteful number, since it uses less digits than its factorization.

228617206650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 228617206650 in words is "two hundred twenty-eight billion, six hundred seventeen million, two hundred six thousand, six hundred fifty".