1120352720 has 80 divisors (see below), whose sum is σ = 2651616000. Its totient is φ = 440154624.

The previous prime is 1120352719. The next prime is 1120352729. The reversal of 1120352720 is 272530211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1120352720² = 2510380434422796800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120352729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1699751 + ... + 1700409.

It is an arithmetic number, because the mean of its divisors is an integer number (33145200).

Almost surely, 2^1120352720 is an apocalyptic number.

1120352720 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 1120352720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1325808000).

1120352720 is an abundant number, since it is smaller than the sum of its proper divisors (1531263280).

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

1120352720 is a wasteful number, since it uses less digits than its factorization.

1120352720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1120352720 is about 33471.6704094672. The cubic root of 1120352720 is about 1038.6078265779.

Adding to 1120352720 its reverse (272530211), we get a palindrome (1392882931).

The spelling of 1120352720 in words is "one billion, one hundred twenty million, three hundred fifty-two thousand, seven hundred twenty".