10003003020 has 36 divisors (see below), whose sum is σ = 30342443040. Its totient is φ = 2667467424.

The previous prime is 10003003009. The next prime is 10003003033. The reversal of 10003003020 is 2030030001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×10003003020³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10003002993 and 10003003011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27785940 + ... + 27786299.

It is an arithmetic number, because the mean of its divisors is an integer number (842845640).

Almost surely, 2^10003003020 is an apocalyptic number.

10003003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10003003020 is an abundant number, since it is smaller than the sum of its proper divisors (20339440020).

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

10003003020 is a wasteful number, since it uses less digits than its factorization.

10003003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55572254 (or 55572249 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

Adding to 10003003020 its reverse (2030030001), we get a palindrome (12033033021).

The spelling of 10003003020 in words is "ten billion, three million, three thousand, twenty".