1328887 has 8 divisors (see below), whose sum is σ = 1527200. Its totient is φ = 1132704.

The previous prime is 1328863. The next prime is 1328891. The reversal of 1328887 is 7888231.

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

It is a cyclic number.

It is not a de Polignac number, because 1328887 - 2¹¹ = 1326839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328807) 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, 1189 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (190900).

2^1328887 is an apocalyptic number.

1328887 is a deficient number, since it is larger than the sum of its proper divisors (198313).

1328887 is an equidigital number, since it uses as much as digits as its factorization.

1328887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065.

The product of its digits is 21504, while the sum is 37.

The square root of 1328887 is about 1152.7736117729. The cubic root of 1328887 is about 109.9417598034.

It can be divided in two parts, 13 and 28887, that added together give a square (28900 = 170²).

The spelling of 1328887 in words is "one million, three hundred twenty-eight thousand, eight hundred eighty-seven".