20300130440 has 32 divisors (see below), whose sum is σ = 48362077080. Its totient is φ = 7642401792.

The previous prime is 20300130419. The next prime is 20300130479. The reversal of 20300130440 is 4403100302.

It can be written as a sum of positive squares in 4 ways, for example, as 15417195556 + 4882934884 = 124166^2 + 69878^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 14925887 + ... + 14927246.

Almost surely, 2^20300130440 is an apocalyptic number.

20300130440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20300130440 is an abundant number, since it is smaller than the sum of its proper divisors (28061946640).

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

20300130440 is a wasteful number, since it uses less digits than its factorization.

20300130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29853161 (or 29853157 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20300130440 its reverse (4403100302), we get a palindrome (24703230742).

The spelling of 20300130440 in words is "twenty billion, three hundred million, one hundred thirty thousand, four hundred forty".