1272480992 has 12 divisors (see below), whose sum is σ = 2505197016. Its totient is φ = 636240480.

The previous prime is 1272480953. The next prime is 1272481027. The reversal of 1272480992 is 2990842721.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19882484 + ... + 19882547.

It is an arithmetic number, because the mean of its divisors is an integer number (208766418).

Almost surely, 2^1272480992 is an apocalyptic number.

It is an amenable number.

1272480992 is a deficient number, since it is larger than the sum of its proper divisors (1232716024).

1272480992 is an equidigital number, since it uses as much as digits as its factorization.

1272480992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39765041 (or 39765033 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1272480992 is about 35671.8515359099. The cubic root of 1272480992 is about 1083.6368567957.

The spelling of 1272480992 in words is "one billion, two hundred seventy-two million, four hundred eighty thousand, nine hundred ninety-two".