228305992780 has 12 divisors (see below), whose sum is σ = 479442584880. Its totient is φ = 91322397104.

The previous prime is 228305992771. The next prime is 228305992781. The reversal of 228305992780 is 87299503822.

It is a super-2 number, since 2×228305992780² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228305992781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5707649800 + ... + 5707649839.

It is an arithmetic number, because the mean of its divisors is an integer number (39953548740).

Almost surely, 2^228305992780 is an apocalyptic number.

228305992780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228305992780 is an abundant number, since it is smaller than the sum of its proper divisors (251136592100).

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

228305992780 is a wasteful number, since it uses less digits than its factorization.

228305992780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415299648 (or 11415299646 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 228305992780 in words is "two hundred twenty-eight billion, three hundred five million, nine hundred ninety-two thousand, seven hundred eighty".