1300002444 has 144 divisors (see below), whose sum is σ = 3819003552. Its totient is φ = 369248256.

The previous prime is 1300002419. The next prime is 1300002463. The reversal of 1300002444 is 4442000031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 420127 + ... + 423209.

It is an arithmetic number, because the mean of its divisors is an integer number (26520858).

Almost surely, 2^1300002444 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 1300002444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1909501776).

1300002444 is an abundant number, since it is smaller than the sum of its proper divisors (2519001108).

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

1300002444 is a wasteful number, since it uses less digits than its factorization.

1300002444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176 (or 3171 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1300002444 is about 36055.5466468060. The cubic root of 1300002444 is about 1091.3935670002.

Adding to 1300002444 its reverse (4442000031), we get a palindrome (5742002475).

The spelling of 1300002444 in words is "one billion, three hundred million, two thousand, four hundred forty-four".