1009200020 has 24 divisors (see below), whose sum is σ = 2123108064. Its totient is φ = 402958496.

The previous prime is 1009200013. The next prime is 1009200047. The reversal of 1009200020 is 200029001.

1009200020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1009199968 and 1009200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33554 + ... + 56073.

It is an arithmetic number, because the mean of its divisors is an integer number (88462836).

Almost surely, 2^1009200020 is an apocalyptic number.

1009200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009200020 is an abundant number, since it is smaller than the sum of its proper divisors (1113908044).

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

1009200020 is a wasteful number, since it uses less digits than its factorization.

1009200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90199 (or 90197 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1009200020 is about 31767.9086500827. The cubic root of 1009200020 is about 1003.0573166226.

Adding to 1009200020 its reverse (200029001), we get a palindrome (1209229021).

The spelling of 1009200020 in words is "one billion, nine million, two hundred thousand, twenty".