2272820287 has 4 divisors (see below), whose sum is σ = 2406515616. Its totient is φ = 2139124960.

The previous prime is 2272820267. The next prime is 2272820293. The reversal of 2272820287 is 7820282722.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2272820287 - 2¹⁵ = 2272787519 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272820267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66847639 + ... + 66847672.

It is an arithmetic number, because the mean of its divisors is an integer number (601628904).

Almost surely, 2^2272820287 is an apocalyptic number.

2272820287 is a deficient number, since it is larger than the sum of its proper divisors (133695329).

2272820287 is a wasteful number, since it uses less digits than its factorization.

2272820287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133695328.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 2272820287 is about 47674.1049942209. The cubic root of 2272820287 is about 1314.7858831070.

The spelling of 2272820287 in words is "two billion, two hundred seventy-two million, eight hundred twenty thousand, two hundred eighty-seven".