1273271228 has 6 divisors (see below), whose sum is σ = 2228224656. Its totient is φ = 636635612.

The previous prime is 1273271221. The next prime is 1273271243. The reversal of 1273271228 is 8221723721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273271221) by changing a digit.

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 as a sum of consecutive naturals, namely, 159158900 + ... + 159158907.

It is an arithmetic number, because the mean of its divisors is an integer number (371370776).

Almost surely, 2^1273271228 is an apocalyptic number.

It is an amenable number.

1273271228 is a deficient number, since it is larger than the sum of its proper divisors (954953428).

1273271228 is a wasteful number, since it uses less digits than its factorization.

1273271228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318317811 (or 318317809 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 1273271228 is about 35682.9262813464. The cubic root of 1273271228 is about 1083.8611303883.

Adding to 1273271228 its reverse (8221723721), we get a palindrome (9494994949).

The spelling of 1273271228 in words is "one billion, two hundred seventy-three million, two hundred seventy-one thousand, two hundred twenty-eight".