2724078321 has 24 divisors (see below), whose sum is σ = 4032119520. Its totient is φ = 1771598400.

The previous prime is 2724078223. The next prime is 2724078359. The reversal of 2724078321 is 1238704272.

2724078321 is a `hidden beast` number, since 27 + 240 + 78 + 321 = 666.

It is not a de Polignac number, because 2724078321 - 2¹⁴ = 2724061937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2724078421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49981 + ... + 89141.

It is an arithmetic number, because the mean of its divisors is an integer number (168004980).

Almost surely, 2^2724078321 is an apocalyptic number.

It is an amenable number.

2724078321 is a deficient number, since it is larger than the sum of its proper divisors (1308041199).

2724078321 is a wasteful number, since it uses less digits than its factorization.

2724078321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39357 (or 39354 counting only the distinct ones).

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

The square root of 2724078321 is about 52192.7037142166. The cubic root of 2724078321 is about 1396.6037269658.

The spelling of 2724078321 in words is "two billion, seven hundred twenty-four million, seventy-eight thousand, three hundred twenty-one".