1272782227 has 16 divisors (see below), whose sum is σ = 1322231040. Its totient is φ = 1224523872.

The previous prime is 1272782143. The next prime is 1272782237. The reversal of 1272782227 is 7222872721.

It is not a de Polignac number, because 1272782227 - 2⁷ = 1272782099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272782227.

It is not an unprimeable number, because it can be changed into a prime (1272782237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583024 + ... + 585202.

It is an arithmetic number, because the mean of its divisors is an integer number (82639440).

Almost surely, 2^1272782227 is an apocalyptic number.

1272782227 is a deficient number, since it is larger than the sum of its proper divisors (49448813).

1272782227 is a wasteful number, since it uses less digits than its factorization.

1272782227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442.

The product of its digits is 87808, while the sum is 40.

The square root of 1272782227 is about 35676.0735928157. The cubic root of 1272782227 is about 1083.7223599966.

The spelling of 1272782227 in words is "one billion, two hundred seventy-two million, seven hundred eighty-two thousand, two hundred twenty-seven".