1320425760 has 96 divisors (see below), whose sum is σ = 4174777152. Its totient is φ = 350807040.

The previous prime is 1320425759. The next prime is 1320425761. The reversal of 1320425760 is 675240231.

It is an interprime number because it is at equal distance from previous prime (1320425759) and next prime (1320425761).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1320425761) 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, 127995 + ... + 137925.

It is an arithmetic number, because the mean of its divisors is an integer number (43487262).

Almost surely, 2^1320425760 is an apocalyptic number.

1320425760 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 1320425760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2087388576).

1320425760 is an abundant number, since it is smaller than the sum of its proper divisors (2854351392).

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

1320425760 is a wasteful number, since it uses less digits than its factorization.

1320425760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226 (or 10218 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 1320425760 is about 36337.6631059291. The cubic root of 1320425760 is about 1097.0792377700.

Adding to 1320425760 its reverse (675240231), we get a palindrome (1995665991).

The spelling of 1320425760 in words is "one billion, three hundred twenty million, four hundred twenty-five thousand, seven hundred sixty".