2643800236 has 48 divisors (see below), whose sum is σ = 5781726720. Its totient is φ = 1027653120.

The previous prime is 2643800231. The next prime is 2643800273. The reversal of 2643800236 is 6320083462.

It is not an unprimeable number, because it can be changed into a prime (2643800231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125436 + ... + 144988.

It is an arithmetic number, because the mean of its divisors is an integer number (120452640).

Almost surely, 2^2643800236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2643800236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2890863360).

2643800236 is an abundant number, since it is smaller than the sum of its proper divisors (3137926484).

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

2643800236 is a wasteful number, since it uses less digits than its factorization.

2643800236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20014 (or 20012 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 2643800236 is about 51417.8980122681. The cubic root of 2643800236 is about 1382.7474906570.

Adding to 2643800236 its reverse (6320083462), we get a palindrome (8963883698).

The spelling of 2643800236 in words is "two billion, six hundred forty-three million, eight hundred thousand, two hundred thirty-six".