1002300020 has 12 divisors (see below), whose sum is σ = 2104830084. Its totient is φ = 400920000.

The previous prime is 1002299959. The next prime is 1002300031. The reversal of 1002300020 is 200032001.

It can be written as a sum of positive squares in 2 ways, for example, as 483736036 + 518563984 = 21994^2 + 22772^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1002299980 and 1002300007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25057481 + ... + 25057520.

It is an arithmetic number, because the mean of its divisors is an integer number (175402507).

Almost surely, 2^1002300020 is an apocalyptic number.

1002300020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002300020 is an abundant number, since it is smaller than the sum of its proper divisors (1102530064).

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

1002300020 is a wasteful number, since it uses less digits than its factorization.

1002300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50115010 (or 50115008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1002300020 is about 31659.1222240921. The cubic root of 1002300020 is about 1000.7660862953.

Adding to 1002300020 its reverse (200032001), we get a palindrome (1202332021).

The spelling of 1002300020 in words is "one billion, two million, three hundred thousand, twenty".