1260136228 has 24 divisors (see below), whose sum is σ = 2377727352. Its totient is φ = 580902144.

The previous prime is 1260136153. The next prime is 1260136253. The reversal of 1260136228 is 8226310621.

It can be written as a sum of positive squares in 4 ways, for example, as 182196004 + 1077940224 = 13498^2 + 32832^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1260136228.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30426 + ... + 58702.

It is an arithmetic number, because the mean of its divisors is an integer number (99071973).

Almost surely, 2^1260136228 is an apocalyptic number.

It is an amenable number.

1260136228 is a deficient number, since it is larger than the sum of its proper divisors (1117591124).

1260136228 is a wasteful number, since it uses less digits than its factorization.

1260136228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29151 (or 29149 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1260136228 is about 35498.3975412976. The cubic root of 1260136228 is about 1080.1212221042.

Adding to 1260136228 its reverse (8226310621), we get a palindrome (9486446849).

The spelling of 1260136228 in words is "one billion, two hundred sixty million, one hundred thirty-six thousand, two hundred twenty-eight".