228696786528 has 192 divisors, whose sum is σ = 706174801920. Its totient is φ = 63456307200.

The previous prime is 228696786497. The next prime is 228696786551. The reversal of 228696786528 is 825687696822.

228696786528 is digitally balanced in base 3, 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3203058 + ... + 3273678.

It is an arithmetic number, because the mean of its divisors is an integer number (3677993760).

Almost surely, 2^228696786528 is an apocalyptic number.

228696786528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228696786528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353087400960).

228696786528 is an abundant number, since it is smaller than the sum of its proper divisors (477478015392).

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

228696786528 is a wasteful number, since it uses less digits than its factorization.

228696786528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70781 (or 70773 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 69.

The spelling of 228696786528 in words is "two hundred twenty-eight billion, six hundred ninety-six million, seven hundred eighty-six thousand, five hundred twenty-eight".