2272345787 has 16 divisors (see below), whose sum is σ = 2423672832. Its totient is φ = 2126619360.

The previous prime is 2272345771. The next prime is 2272345799. The reversal of 2272345787 is 7875432722.

It is a cyclic number.

It is not a de Polignac number, because 2272345787 - 2⁴ = 2272345771 is a prime.

It is a Smith number, since the sum of its digits (47) 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 not an unprimeable number, because it can be changed into a prime (2272345687) 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 15 ways as a sum of consecutive naturals, for example, 185618 + ... + 197480.

It is an arithmetic number, because the mean of its divisors is an integer number (151479552).

Almost surely, 2^2272345787 is an apocalyptic number.

2272345787 is a deficient number, since it is larger than the sum of its proper divisors (151327045).

2272345787 is a wasteful number, since it uses less digits than its factorization.

2272345787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12098.

The product of its digits is 1317120, while the sum is 47.

The square root of 2272345787 is about 47669.1282383053. The cubic root of 2272345787 is about 1314.6943801514.

The spelling of 2272345787 in words is "two billion, two hundred seventy-two million, three hundred forty-five thousand, seven hundred eighty-seven".