2774721281 has 8 divisors (see below), whose sum is σ = 2844305280. Its totient is φ = 2705576848.

The previous prime is 2774721269. The next prime is 2774721347. The reversal of 2774721281 is 1821274772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2774721281 - 2⁶ = 2774721217 is a prime.

It is a super-2 number, since 2×2774721281² = 15398156374468561922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2774721211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 97091 + ... + 122376.

It is an arithmetic number, because the mean of its divisors is an integer number (355538160).

Almost surely, 2^2774721281 is an apocalyptic number.

It is an amenable number.

2774721281 is a deficient number, since it is larger than the sum of its proper divisors (69583999).

2774721281 is a wasteful number, since it uses less digits than its factorization.

2774721281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219783.

The product of its digits is 87808, while the sum is 41.

The square root of 2774721281 is about 52675.6232141586. The cubic root of 2774721281 is about 1405.2053297680.

The spelling of 2774721281 in words is "two billion, seven hundred seventy-four million, seven hundred twenty-one thousand, two hundred eighty-one".