1279225472 has 32 divisors (see below), whose sum is σ = 2912524320. Its totient is φ = 548239104.

The previous prime is 1279225463. The next prime is 1279225567. The reversal of 1279225472 is 2745229721.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712958 + ... + 714749.

It is an arithmetic number, because the mean of its divisors is an integer number (91016385).

Almost surely, 2^1279225472 is an apocalyptic number.

It is an amenable number.

1279225472 is an abundant number, since it is smaller than the sum of its proper divisors (1633298848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1279225472 is an equidigital number, since it uses as much as digits as its factorization.

1279225472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427728 (or 1427716 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 1279225472 is about 35766.2616441808. The cubic root of 1279225472 is about 1085.5480032377.

The spelling of 1279225472 in words is "one billion, two hundred seventy-nine million, two hundred twenty-five thousand, four hundred seventy-two".