2133434440 has 32 divisors (see below), whose sum is σ = 4890802680. Its totient is φ = 837271552.

The previous prime is 2133434423. The next prime is 2133434441. The reversal of 2133434440 is 444343312.

It can be written as a sum of positive squares in 4 ways, for example, as 1845046116 + 288388324 = 42954^2 + 16982^2 .

It is a super-2 number, since 2×2133434440² = 9103085019556227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2133434399 and 2133434408.

It is not an unprimeable number, because it can be changed into a prime (2133434441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501049 + ... + 505288.

Almost surely, 2^2133434440 is an apocalyptic number.

2133434440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133434440 is an abundant number, since it is smaller than the sum of its proper divisors (2757368240).

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

2133434440 is a wasteful number, since it uses less digits than its factorization.

2133434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006401 (or 1006397 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 2133434440 is about 46189.1160339749. The cubic root of 2133434440 is about 1287.3395161140.

Adding to 2133434440 its reverse (444343312), we get a palindrome (2577777752).

The spelling of 2133434440 in words is "two billion, one hundred thirty-three million, four hundred thirty-four thousand, four hundred forty".