228947602816 has 64 divisors (see below), whose sum is σ = 483620760000. Its totient is φ = 107587362816.

The previous prime is 228947602811. The next prime is 228947602837. The reversal of 228947602816 is 618206749822.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×228947602816² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228947602811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468585 + ... + 1616983.

It is an arithmetic number, because the mean of its divisors is an integer number (7556574375).

Almost surely, 2^228947602816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228947602816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241810380000).

228947602816 is an abundant number, since it is smaller than the sum of its proper divisors (254673157184).

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

228947602816 is a wasteful number, since it uses less digits than its factorization.

228947602816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149139 (or 149127 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 228947602816 in words is "two hundred twenty-eight billion, nine hundred forty-seven million, six hundred two thousand, eight hundred sixteen".