1330477720 has 128 divisors (see below), whose sum is σ = 3540983040. Its totient is φ = 443543040.

The previous prime is 1330477703. The next prime is 1330477723. The reversal of 1330477720 is 277740331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330477723) by changing a digit.

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, 931647 + ... + 933073.

It is an arithmetic number, because the mean of its divisors is an integer number (27663930).

Almost surely, 2^1330477720 is an apocalyptic number.

1330477720 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 1330477720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1770491520).

1330477720 is an abundant number, since it is smaller than the sum of its proper divisors (2210505320).

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

1330477720 is a wasteful number, since it uses less digits than its factorization.

1330477720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 1330477720 is about 36475.7141122693. The cubic root of 1330477720 is about 1099.8561023888.

The spelling of 1330477720 in words is "one billion, three hundred thirty million, four hundred seventy-seven thousand, seven hundred twenty".