1328471 has 4 divisors (see below), whose sum is σ = 1338744. Its totient is φ = 1318200.

The previous prime is 1328449. The next prime is 1328473. The reversal of 1328471 is 1748231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1328471 - 2⁶ = 1328407 is a prime.

It is a super-3 number, since 3×1328471³ = 7033597140333093333, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1328471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4940 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (334686).

2^1328471 is an apocalyptic number.

1328471 is a deficient number, since it is larger than the sum of its proper divisors (10273).

1328471 is a wasteful number, since it uses less digits than its factorization.

1328471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272.

The product of its digits is 1344, while the sum is 26.

The square root of 1328471 is about 1152.5931632627. The cubic root of 1328471 is about 109.9302864062.

The spelling of 1328471 in words is "one million, three hundred twenty-eight thousand, four hundred seventy-one".