1264040276 has 12 divisors (see below), whose sum is σ = 2212428372. Its totient is φ = 631917888.

The previous prime is 1264040263. The next prime is 1264040311. The reversal of 1264040276 is 6720404621.

It can be written as a sum of positive squares in 2 ways, for example, as 62031376 + 1202008900 = 7876^2 + 34670^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 6806 + ... + 50738.

It is an arithmetic number, because the mean of its divisors is an integer number (184369031).

Almost surely, 2^1264040276 is an apocalyptic number.

It is an amenable number.

1264040276 is a deficient number, since it is larger than the sum of its proper divisors (948388096).

1264040276 is a wasteful number, since it uses less digits than its factorization.

1264040276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51130 (or 51128 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1264040276 is about 35553.3440902540. The cubic root of 1264040276 is about 1081.2355190416.

Adding to 1264040276 its reverse (6720404621), we get a palindrome (7984444897).

The spelling of 1264040276 in words is "one billion, two hundred sixty-four million, forty thousand, two hundred seventy-six".