227520545720 has 128 divisors (see below), whose sum is σ = 579802890240. Its totient is φ = 79721832960.

The previous prime is 227520545719. The next prime is 227520545753. The reversal of 227520545720 is 27545025722.

It is a super-3 number, since 3×227520545720³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 1444025 + ... + 1593815.

It is an arithmetic number, because the mean of its divisors is an integer number (4529710080).

Almost surely, 2^227520545720 is an apocalyptic number.

227520545720 is a gapful number since it is divisible by the number (20) 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 227520545720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289901445120).

227520545720 is an abundant number, since it is smaller than the sum of its proper divisors (352282344520).

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

227520545720 is a wasteful number, since it uses less digits than its factorization.

227520545720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149965 (or 149961 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 41.

The spelling of 227520545720 in words is "two hundred twenty-seven billion, five hundred twenty million, five hundred forty-five thousand, seven hundred twenty".