1328672571 has 8 divisors (see below), whose sum is σ = 1775600640. Its totient is φ = 883763112.

The previous prime is 1328672567. The next prime is 1328672593. The reversal of 1328672571 is 1752768231.

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

It is not a de Polignac number, because 1328672571 - 2² = 1328672567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1328672531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503115 + ... + 505748.

It is an arithmetic number, because the mean of its divisors is an integer number (221950080).

Almost surely, 2^1328672571 is an apocalyptic number.

1328672571 is a deficient number, since it is larger than the sum of its proper divisors (446928069).

1328672571 is a wasteful number, since it uses less digits than its factorization.

1328672571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009305.

The product of its digits is 141120, while the sum is 42.

The square root of 1328672571 is about 36450.9611807425. The cubic root of 1328672571 is about 1099.3584609022.

The spelling of 1328672571 in words is "one billion, three hundred twenty-eight million, six hundred seventy-two thousand, five hundred seventy-one".