2533866440 has 48 divisors (see below), whose sum is σ = 6632012700. Its totient is φ = 868753536.

The previous prime is 2533866431. The next prime is 2533866443. The reversal of 2533866440 is 446683352.

It can be written as a sum of positive squares in 2 ways, for example, as 2513417956 + 20448484 = 50134^2 + 4522^2 .

It is not an unprimeable number, because it can be changed into a prime (2533866443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644435 + ... + 648354.

Almost surely, 2^2533866440 is an apocalyptic number.

2533866440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2533866440 is an abundant number, since it is smaller than the sum of its proper divisors (4098146260).

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

2533866440 is a wasteful number, since it uses less digits than its factorization.

2533866440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292814 (or 1292803 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 2533866440 is about 50337.5251676123. The cubic root of 2533866440 is about 1363.3098520129.

The spelling of 2533866440 in words is "two billion, five hundred thirty-three million, eight hundred sixty-six thousand, four hundred forty".