30003010020 has 72 divisors (see below), whose sum is σ = 91025710776. Its totient is φ = 7999345152.

The previous prime is 30003009983. The next prime is 30003010021. The reversal of 30003010020 is 2001030003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2406491136 + 27596518884 = 49056^2 + 166122^2 .

It is a super-2 number, since 2×30003010020² (a number of 22 digits) contains 22 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 = 30003009984 and 30003010011.

It is not an unprimeable number, because it can be changed into a prime (30003010021) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1283154 + ... + 1306326.

It is an arithmetic number, because the mean of its divisors is an integer number (1264245983).

Almost surely, 2^30003010020 is an apocalyptic number.

30003010020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30003010020 is an abundant number, since it is smaller than the sum of its proper divisors (61022700756).

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

30003010020 is a wasteful number, since it uses less digits than its factorization.

30003010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30381 (or 30376 counting only the distinct ones).

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

Adding to 30003010020 its reverse (2001030003), we get a palindrome (32004040023).

The spelling of 30003010020 in words is "thirty billion, three million, ten thousand, twenty".