20300344040 has 48 divisors (see below), whose sum is σ = 48206322180. Its totient is φ = 7692756480.

The previous prime is 20300344013. The next prime is 20300344049. The reversal of 20300344040 is 4044300302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19459692004 + 840652036 = 139498^2 + 28994^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (20300344049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 688481 + ... + 717360.

Almost surely, 2^20300344040 is an apocalyptic number.

20300344040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20300344040 is an abundant number, since it is smaller than the sum of its proper divisors (27905978140).

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

20300344040 is a wasteful number, since it uses less digits than its factorization.

20300344040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405890 (or 1405867 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20300344040 its reverse (4044300302), we get a palindrome (24344644342).

The spelling of 20300344040 in words is "twenty billion, three hundred million, three hundred forty-four thousand, forty".