1004900020 has 48 divisors (see below), whose sum is σ = 2171070720. Its totient is φ = 390420864.

The previous prime is 1004900011. The next prime is 1004900021. The reversal of 1004900020 is 200094001.

It is a junction number, because it is equal to n+sod(n) for n = 1004899967 and 1004900003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004900021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768207 + ... + 769513.

It is an arithmetic number, because the mean of its divisors is an integer number (45230640).

Almost surely, 2^1004900020 is an apocalyptic number.

1004900020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004900020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085535360).

1004900020 is an abundant number, since it is smaller than the sum of its proper divisors (1166170700).

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

1004900020 is a wasteful number, since it uses less digits than its factorization.

1004900020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1004900020 is about 31700.1580437701. The cubic root of 1004900020 is about 1001.6306794392.

Adding to 1004900020 its reverse (200094001), we get a palindrome (1204994021).

The spelling of 1004900020 in words is "one billion, four million, nine hundred thousand, twenty".