228919980 has 48 divisors (see below), whose sum is σ = 674714880. Its totient is φ = 57832128.

The previous prime is 228919969. The next prime is 228919987. The reversal of 228919980 is 89919822.

228919980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228919987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99264 + ... + 101543.

It is an arithmetic number, because the mean of its divisors is an integer number (14056560).

Almost surely, 2^228919980 is an apocalyptic number.

228919980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228919980 is an abundant number, since it is smaller than the sum of its proper divisors (445794900).

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

228919980 is a wasteful number, since it uses less digits than its factorization.

228919980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200838 (or 200836 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 228919980 is about 15130.1017841917. The cubic root of 228919980 is about 611.7320476787.

The spelling of 228919980 in words is "two hundred twenty-eight million, nine hundred nineteen thousand, nine hundred eighty".