1272782226 has 16 divisors (see below), whose sum is σ = 2559630528. Its totient is φ = 421916400.

The previous prime is 1272782143. The next prime is 1272782237. The reversal of 1272782226 is 6222872721.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584910 + ... + 587081.

It is an arithmetic number, because the mean of its divisors is an integer number (159976908).

Almost surely, 2^1272782226 is an apocalyptic number.

1272782226 is an abundant number, since it is smaller than the sum of its proper divisors (1286848302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272782226 is a wasteful number, since it uses less digits than its factorization.

1272782226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172177.

The product of its digits is 75264, while the sum is 39.

The square root of 1272782226 is about 35676.0735788007. The cubic root of 1272782226 is about 1083.7223597127.

The spelling of 1272782226 in words is "one billion, two hundred seventy-two million, seven hundred eighty-two thousand, two hundred twenty-six".