1272076648 has 16 divisors (see below), whose sum is σ = 2467390500. Its totient is φ = 614105856.

The previous prime is 1272076633. The next prime is 1272076649. The reversal of 1272076648 is 8466702721.

It can be written as a sum of positive squares in 2 ways, for example, as 1139872644 + 132204004 = 33762^2 + 11498^2 .

It is not an unprimeable number, because it can be changed into a prime (1272076649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2741313 + ... + 2741776.

Almost surely, 2^1272076648 is an apocalyptic number.

It is an amenable number.

1272076648 is a deficient number, since it is larger than the sum of its proper divisors (1195313852).

1272076648 is a wasteful number, since it uses less digits than its factorization.

1272076648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483124 (or 5483120 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 1272076648 is about 35666.1835356686. The cubic root of 1272076648 is about 1083.5220656954.

The spelling of 1272076648 in words is "one billion, two hundred seventy-two million, seventy-six thousand, six hundred forty-eight".