1227728253 has 32 divisors (see below), whose sum is σ = 1797811200. Its totient is φ = 741794816.

The previous prime is 1227728251. The next prime is 1227728267. The reversal of 1227728253 is 3528277221.

It is a cyclic number.

It is not a de Polignac number, because 1227728253 - 2¹ = 1227728251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227728251) 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 in 31 ways as a sum of consecutive naturals, for example, 707575 + ... + 709307.

It is an arithmetic number, because the mean of its divisors is an integer number (56181600).

Almost surely, 2^1227728253 is an apocalyptic number.

It is an amenable number.

1227728253 is a deficient number, since it is larger than the sum of its proper divisors (570082947).

1227728253 is a wasteful number, since it uses less digits than its factorization.

1227728253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261.

The product of its digits is 94080, while the sum is 39.

The square root of 1227728253 is about 35038.9533662180. The cubic root of 1227728253 is about 1070.7812307890.

The spelling of 1227728253 in words is "one billion, two hundred twenty-seven million, seven hundred twenty-eight thousand, two hundred fifty-three".