1320626004 has 12 divisors (see below), whose sum is σ = 3081460704. Its totient is φ = 440208664.

The previous prime is 1320626003. The next prime is 1320626023. The reversal of 1320626004 is 4006260231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320626003) 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 3 ways as a sum of consecutive naturals, for example, 55026072 + ... + 55026095.

It is an arithmetic number, because the mean of its divisors is an integer number (256788392).

Almost surely, 2^1320626004 is an apocalyptic number.

It is an amenable number.

1320626004 is an abundant number, since it is smaller than the sum of its proper divisors (1760834700).

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

1320626004 is a wasteful number, since it uses less digits than its factorization.

1320626004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110052174 (or 110052172 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1320626004 is about 36340.4183245047. The cubic root of 1320626004 is about 1097.1346927193.

Adding to 1320626004 its reverse (4006260231), we get a palindrome (5326886235).

The spelling of 1320626004 in words is "one billion, three hundred twenty million, six hundred twenty-six thousand, four".