1263680228 has 12 divisors (see below), whose sum is σ = 2212058940. Its totient is φ = 631663392.

The previous prime is 1263680213. The next prime is 1263680239. The reversal of 1263680228 is 8220863621.

It can be written as a sum of positive squares in 2 ways, for example, as 1027074304 + 236605924 = 32048^2 + 15382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1263680191 and 1263680200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27383 + ... + 57246.

It is an arithmetic number, because the mean of its divisors is an integer number (184338245).

Almost surely, 2^1263680228 is an apocalyptic number.

It is an amenable number.

1263680228 is a deficient number, since it is larger than the sum of its proper divisors (948378712).

1263680228 is a wasteful number, since it uses less digits than its factorization.

1263680228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88366 (or 88364 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1263680228 is about 35548.2802396965. The cubic root of 1263680228 is about 1081.1328499358.

The spelling of 1263680228 in words is "one billion, two hundred sixty-three million, six hundred eighty thousand, two hundred twenty-eight".