2723721840 has 480 divisors, whose sum is σ = 10968048000. Its totient is φ = 605122560.

The previous prime is 2723721821. The next prime is 2723721851. The reversal of 2723721840 is 481273272.

2723721840 is a `hidden beast` number, since 272 + 372 + 18 + 4 + 0 = 666.

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 = 2723721795 and 2723721804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10125226 + ... + 10125494.

It is an arithmetic number, because the mean of its divisors is an integer number (22850100).

Almost surely, 2^2723721840 is an apocalyptic number.

2723721840 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 2723721840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5484024000).

2723721840 is an abundant number, since it is smaller than the sum of its proper divisors (8244326160).

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

2723721840 is a wasteful number, since it uses less digits than its factorization.

2723721840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2723721840 is about 52189.2885561779. The cubic root of 2723721840 is about 1396.5428030674.

The spelling of 2723721840 in words is "two billion, seven hundred twenty-three million, seven hundred twenty-one thousand, eight hundred forty".