1328427 has 8 divisors (see below), whose sum is σ = 1968080. Its totient is φ = 885600.

The previous prime is 1328417. The next prime is 1328447. The reversal of 1328427 is 7248231.

It is not a de Polignac number, because 1328427 - 2¹⁸ = 1066283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 49201 = 1328427 / (1 + 3 + 2 + 8 + 4 + 2 + 7).

It is a Duffinian number.

1328427 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328427.

It is not an unprimeable number, because it can be changed into a prime (1328407) 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, 24574 + ... + 24627.

It is an arithmetic number, because the mean of its divisors is an integer number (246010).

2^1328427 is an apocalyptic number.

1328427 is a deficient number, since it is larger than the sum of its proper divisors (639653).

1328427 is an equidigital number, since it uses as much as digits as its factorization.

1328427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49210 (or 49204 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1328427 is about 1152.5740757105. The cubic root of 1328427 is about 109.9290727337.

The spelling of 1328427 in words is "one million, three hundred twenty-eight thousand, four hundred twenty-seven".