1120305620 has 108 divisors (see below), whose sum is σ = 2862232884. Its totient is φ = 367234560.

The previous prime is 1120305601. The next prime is 1120305623. The reversal of 1120305620 is 265030211.

It can be written as a sum of positive squares in 2 ways, for example, as 552532036 + 567773584 = 23506^2 + 23828^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1120305592 and 1120305601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120305623) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 517340 + ... + 519500.

Almost surely, 2^1120305620 is an apocalyptic number.

1120305620 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 1120305620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1431116442).

1120305620 is an abundant number, since it is smaller than the sum of its proper divisors (1741927264).

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

1120305620 is a wasteful number, since it uses less digits than its factorization.

1120305620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2198 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1120305620 is about 33470.9668220086. The cubic root of 1120305620 is about 1038.5932719015.

Adding to 1120305620 its reverse (265030211), we get a palindrome (1385335831).

The spelling of 1120305620 in words is "one billion, one hundred twenty million, three hundred five thousand, six hundred twenty".