1002944688 has 20 divisors (see below), whose sum is σ = 2590940568. Its totient is φ = 334314880.

The previous prime is 1002944687. The next prime is 1002944707. The reversal of 1002944688 is 8864492001.

It is not an unprimeable number, because it can be changed into a prime (1002944687) 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, 10447293 + ... + 10447388.

Almost surely, 2^1002944688 is an apocalyptic number.

It is an amenable number.

1002944688 is an abundant number, since it is smaller than the sum of its proper divisors (1587995880).

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

1002944688 is a wasteful number, since it uses less digits than its factorization.

1002944688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20894692 (or 20894686 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1002944688 is about 31669.3019815720. The cubic root of 1002944688 is about 1000.9806007745.

The spelling of 1002944688 in words is "one billion, two million, nine hundred forty-four thousand, six hundred eighty-eight".