1030030020 has 60 divisors (see below), whose sum is σ = 3231247404. Its totient is φ = 274674240.

The previous prime is 1030030009. The next prime is 1030030021. The reversal of 1030030020 is 200300301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 373030596 + 656999424 = 19314^2 + 25632^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 = 1030029984 and 1030030011.

It is not an unprimeable number, because it can be changed into a prime (1030030021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 316291 + ... + 319530.

Almost surely, 2^1030030020 is an apocalyptic number.

1030030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030030020 is an abundant number, since it is smaller than the sum of its proper divisors (2201217384).

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

1030030020 is a wasteful number, since it uses less digits than its factorization.

1030030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635842 (or 635831 counting only the distinct ones).

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

The square root of 1030030020 is about 32094.0807626578. The cubic root of 1030030020 is about 1009.9114453615.

Adding to 1030030020 its reverse (200300301), we get a palindrome (1230330321).

The spelling of 1030030020 in words is "one billion, thirty million, thirty thousand, twenty".