2030000040 has 96 divisors (see below), whose sum is σ = 6621643080. Its totient is φ = 539352576.

The previous prime is 2030000023. The next prime is 2030000047. The reversal of 2030000040 is 400000302.

It can be written as a sum of positive squares in 4 ways, for example, as 1382501124 + 647498916 = 37182^2 + 25446^2 .

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 = 2029999977 and 2030000031.

It is not an unprimeable number, because it can be changed into a prime (2030000047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89542 + ... + 109898.

Almost surely, 2^2030000040 is an apocalyptic number.

2030000040 is a gapful number since it is divisible by the number (20) 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 2030000040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3310821540).

2030000040 is an abundant number, since it is smaller than the sum of its proper divisors (4591643040).

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

2030000040 is a wasteful number, since it uses less digits than its factorization.

2030000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20651 (or 20644 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 2030000040 is about 45055.5217481720. The cubic root of 2030000040 is about 1266.1894253219.

Adding to 2030000040 its reverse (400000302), we get a palindrome (2430000342).

The spelling of 2030000040 in words is "two billion, thirty million, forty", and thus it is an aban number, an eban number, and an uban number.