1320255504 has 80 divisors (see below), whose sum is σ = 3794697600. Its totient is φ = 439496064.

The previous prime is 1320255481. The next prime is 1320255533. The reversal of 1320255504 is 4055520231.

It is a happy number.

1320255504 is a `hidden beast` number, since 132 + 0 + 25 + 5 + 504 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423102 + ... + 426210.

It is an arithmetic number, because the mean of its divisors is an integer number (47433720).

Almost surely, 2^1320255504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320255504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1897348800).

1320255504 is an abundant number, since it is smaller than the sum of its proper divisors (2474442096).

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

1320255504 is a wasteful number, since it uses less digits than its factorization.

1320255504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1320255504 is about 36335.3203371045. The cubic root of 1320255504 is about 1097.0320831938.

Adding to 1320255504 its reverse (4055520231), we get a palindrome (5375775735).

The spelling of 1320255504 in words is "one billion, three hundred twenty million, two hundred fifty-five thousand, five hundred four".