1300000008 has 32 divisors (see below), whose sum is σ = 3262008960. Its totient is φ = 431732160.

The previous prime is 1300000003. The next prime is 1300000021. The reversal of 1300000008 is 8000000031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1299999939 and 1300000002.

It is not an unprimeable number, because it can be changed into a prime (1300000003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93435 + ... + 106442.

It is an arithmetic number, because the mean of its divisors is an integer number (101937780).

Almost surely, 2^1300000008 is an apocalyptic number.

It is an amenable number.

1300000008 is an abundant number, since it is smaller than the sum of its proper divisors (1962008952).

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

1300000008 is a wasteful number, since it uses less digits than its factorization.

1300000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200157 (or 200153 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1300000008 is about 36055.5128655799. The cubic root of 1300000008 is about 1091.3928852999.

Adding to 1300000008 its reverse (8000000031), we get a palindrome (9300000039).

The spelling of 1300000008 in words is "one billion, three hundred million, eight", and thus it is an aban number.