2725712640 has 576 divisors, whose sum is σ = 11655705600. Its totient is φ = 589234176.

The previous prime is 2725712623. The next prime is 2725712641. The reversal of 2725712640 is 462175272.

It is a happy number.

2725712640 is a `hidden beast` number, since 2 + 7 + 2 + 5 + 7 + 1 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2725712595 and 2725712604.

It is not an unprimeable number, because it can be changed into a prime (2725712641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4596184 + ... + 4596776.

It is an arithmetic number, because the mean of its divisors is an integer number (20235600).

Almost surely, 2^2725712640 is an apocalyptic number.

2725712640 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 2725712640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5827852800).

2725712640 is an abundant number, since it is smaller than the sum of its proper divisors (8929992960).

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

2725712640 is a wasteful number, since it uses less digits than its factorization.

2725712640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 2725712640 is about 52208.3579515771. The cubic root of 2725712640 is about 1396.8829700009.

The spelling of 2725712640 in words is "two billion, seven hundred twenty-five million, seven hundred twelve thousand, six hundred forty".