228540273280 has 128 divisors (see below), whose sum is σ = 615249768960. Its totient is φ = 80424652800.

The previous prime is 228540273263. The next prime is 228540273281. The reversal of 228540273280 is 82372045822.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (228540273281) 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 15 ways as a sum of consecutive naturals, for example, 305359 + ... + 741838.

It is an arithmetic number, because the mean of its divisors is an integer number (4806638820).

Almost surely, 2^228540273280 is an apocalyptic number.

228540273280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228540273280 is an abundant number, since it is smaller than the sum of its proper divisors (386709495680).

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

228540273280 is a wasteful number, since it uses less digits than its factorization.

228540273280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047258 (or 1047246 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 228540273280 in words is "two hundred twenty-eight billion, five hundred forty million, two hundred seventy-three thousand, two hundred eighty".