1276273672 has 8 divisors (see below), whose sum is σ = 2393013150. Its totient is φ = 638136832.

The previous prime is 1276273639. The next prime is 1276273679. The reversal of 1276273672 is 2763726721.

It can be written as a sum of positive squares in only one way, i.e., 1157768676 + 118504996 = 34026^2 + 10886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1276273679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79767097 + ... + 79767112.

Almost surely, 2^1276273672 is an apocalyptic number.

It is an amenable number.

1276273672 is a deficient number, since it is larger than the sum of its proper divisors (1116739478).

1276273672 is a wasteful number, since it uses less digits than its factorization.

1276273672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159534215 (or 159534211 counting only the distinct ones).

The product of its digits is 296352, while the sum is 43.

The square root of 1276273672 is about 35724.9726661897. The cubic root of 1276273672 is about 1084.7123964645.

The spelling of 1276273672 in words is "one billion, two hundred seventy-six million, two hundred seventy-three thousand, six hundred seventy-two".