2645244000 has 384 divisors, whose sum is σ = 11007360000. Its totient is φ = 604454400.

The previous prime is 2645243999. The next prime is 2645244023. The reversal of 2645244000 is 4425462.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 754251 + ... + 757749.

It is an arithmetic number, because the mean of its divisors is an integer number (28665000).

Almost surely, 2^2645244000 is an apocalyptic number.

2645244000 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 2645244000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5503680000).

2645244000 is an abundant number, since it is smaller than the sum of its proper divisors (8362116000).

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

2645244000 is a wasteful number, since it uses less digits than its factorization.

2645244000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2645244000 is about 51431.9356042527. The cubic root of 2645244000 is about 1382.9991483189. Note that the first 3 decimals are identical.

Adding to 2645244000 its reverse (4425462), we get a palindrome (2649669462).

The spelling of 2645244000 in words is "two billion, six hundred forty-five million, two hundred forty-four thousand".