2721757340 has 12 divisors (see below), whose sum is σ = 5715690456. Its totient is φ = 1088702928.

The previous prime is 2721757321. The next prime is 2721757343. The reversal of 2721757340 is 437571272.

It is a junction number, because it is equal to n+sod(n) for n = 2721757294 and 2721757303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721757343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68043914 + ... + 68043953.

It is an arithmetic number, because the mean of its divisors is an integer number (476307538).

Almost surely, 2^2721757340 is an apocalyptic number.

2721757340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2721757340 is an abundant number, since it is smaller than the sum of its proper divisors (2993933116).

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

2721757340 is a wasteful number, since it uses less digits than its factorization.

2721757340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136087876 (or 136087874 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 2721757340 is about 52170.4642494199. The cubic root of 2721757340 is about 1396.2069674777.

The spelling of 2721757340 in words is "two billion, seven hundred twenty-one million, seven hundred fifty-seven thousand, three hundred forty".