7284747281 has 8 divisors (see below), whose sum is σ = 8502562560. Its totient is φ = 6111216288.

The previous prime is 7284747271. The next prime is 7284747329. The reversal of 7284747281 is 1827474827.

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 7284747281 - 2¹⁰ = 7284746257 is a prime.

It is a super-2 number, since 2×7284747281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7284747241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11070716 + ... + 11071373.

It is an arithmetic number, because the mean of its divisors is an integer number (1062820320).

Almost surely, 2^7284747281 is an apocalyptic number.

It is an amenable number.

7284747281 is a deficient number, since it is larger than the sum of its proper divisors (1217815279).

7284747281 is a wasteful number, since it uses less digits than its factorization.

7284747281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22142143.

The product of its digits is 1404928, while the sum is 50.

The square root of 7284747281 is about 85350.7309927689. The cubic root of 7284747281 is about 1938.5254037801.

The spelling of 7284747281 in words is "seven billion, two hundred eighty-four million, seven hundred forty-seven thousand, two hundred eighty-one".