1320272571 has 8 divisors (see below), whose sum is σ = 1760539984. Its totient is φ = 880093440.

The previous prime is 1320272561. The next prime is 1320272573. The reversal of 1320272571 is 1752720231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320272571 - 2⁶ = 1320272507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320272573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31191 + ... + 60111.

It is an arithmetic number, because the mean of its divisors is an integer number (220067498).

Almost surely, 2^1320272571 is an apocalyptic number.

1320272571 is a deficient number, since it is larger than the sum of its proper divisors (440267413).

1320272571 is a wasteful number, since it uses less digits than its factorization.

1320272571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44141.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 1320272571 is about 36335.5551904742. Note that the first 3 decimals coincide. The cubic root of 1320272571 is about 1097.0368103005.

The spelling of 1320272571 in words is "one billion, three hundred twenty million, two hundred seventy-two thousand, five hundred seventy-one".