1003200020 has 24 divisors (see below), whose sum is σ = 2107693224. Its totient is φ = 401094656.

The previous prime is 1003199957. The next prime is 1003200049. The reversal of 1003200020 is 200023001.

It can be written as a sum of positive squares in 4 ways, for example, as 259983376 + 743216644 = 16124^2 + 27262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1003199980 and 1003200007.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 37964 + ... + 58716.

It is an arithmetic number, because the mean of its divisors is an integer number (87820551).

Almost surely, 2^1003200020 is an apocalyptic number.

1003200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003200020 is an abundant number, since it is smaller than the sum of its proper divisors (1104493204).

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

1003200020 is a wasteful number, since it uses less digits than its factorization.

1003200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23179 (or 23177 counting only the distinct ones).

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

The square root of 1003200020 is about 31673.3329474497. The cubic root of 1003200020 is about 1001.0655375598.

Adding to 1003200020 its reverse (200023001), we get a palindrome (1203223021).

The spelling of 1003200020 in words is "one billion, three million, two hundred thousand, twenty".