1320071760 has 720 divisors, whose sum is σ = 5715919872. Its totient is φ = 270950400.

The previous prime is 1320071713. The next prime is 1320071761. The reversal of 1320071760 is 671700231.

It is a tau number, because it is divible by the number of its divisors (720).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320071761) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 18592525 + ... + 18592595.

Almost surely, 2^1320071760 is an apocalyptic number.

1320071760 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 1320071760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2857959936).

1320071760 is an abundant number, since it is smaller than the sum of its proper divisors (4395848112).

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

1320071760 is a wasteful number, since it uses less digits than its factorization.

1320071760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 1320071760 is about 36332.7918002457. The cubic root of 1320071760 is about 1096.9811883949.

Adding to 1320071760 its reverse (671700231), we get a palindrome (1991771991).

The spelling of 1320071760 in words is "one billion, three hundred twenty million, seventy-one thousand, seven hundred sixty".