1220727160 has 128 divisors (see below), whose sum is σ = 3042748800. Its totient is φ = 438681600.

The previous prime is 1220727149. The next prime is 1220727161. The reversal of 1220727160 is 617270221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220727161) 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 31 ways as a sum of consecutive naturals, for example, 2030860 + ... + 2031460.

It is an arithmetic number, because the mean of its divisors is an integer number (23771475).

Almost surely, 2^1220727160 is an apocalyptic number.

1220727160 is a gapful number since it is divisible by the number (10) 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 1220727160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521374400).

1220727160 is an abundant number, since it is smaller than the sum of its proper divisors (1822021640).

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

1220727160 is a wasteful number, since it uses less digits than its factorization.

1220727160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1220727160 is about 34938.9061076617. The cubic root of 1220727160 is about 1068.7419809026.

Adding to 1220727160 its reverse (617270221), we get a palindrome (1837997381).

The spelling of 1220727160 in words is "one billion, two hundred twenty million, seven hundred twenty-seven thousand, one hundred sixty".