1272447476 has 6 divisors (see below), whose sum is σ = 2226783090. Its totient is φ = 636223736.

The previous prime is 1272447439. The next prime is 1272447511. The reversal of 1272447476 is 6747442721.

It can be written as a sum of positive squares in only one way, i.e., 1103967076 + 168480400 = 33226^2 + 12980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159055931 + ... + 159055938.

It is an arithmetic number, because the mean of its divisors is an integer number (371130515).

Almost surely, 2^1272447476 is an apocalyptic number.

It is an amenable number.

1272447476 is a deficient number, since it is larger than the sum of its proper divisors (954335614).

1272447476 is a wasteful number, since it uses less digits than its factorization.

1272447476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318111873 (or 318111871 counting only the distinct ones).

The product of its digits is 526848, while the sum is 44.

The square root of 1272447476 is about 35671.3817506415. The cubic root of 1272447476 is about 1083.6273427069.

The spelling of 1272447476 in words is "one billion, two hundred seventy-two million, four hundred forty-seven thousand, four hundred seventy-six".