228735890766 has 112 divisors (see below), whose sum is σ = 547031949984. Its totient is φ = 71450491392.

The previous prime is 228735890671. The next prime is 228735890771. The reversal of 228735890766 is 667098537822.

228735890766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 5755335 + ... + 5794941.

Almost surely, 2^228735890766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228735890766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273515974992).

228735890766 is an abundant number, since it is smaller than the sum of its proper divisors (318296059218).

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

228735890766 is a wasteful number, since it uses less digits than its factorization.

228735890766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39877 (or 39862 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 228735890766 in words is "two hundred twenty-eight billion, seven hundred thirty-five million, eight hundred ninety thousand, seven hundred sixty-six".