1328770 has 16 divisors (see below), whose sum is σ = 2420280. Its totient is φ = 525184.

The previous prime is 1328749. The next prime is 1328777. The reversal of 1328770 is 778231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1108809 + 219961 = 1053^2 + 469^2 .

It is not an unprimeable number, because it can be changed into a prime (1328777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144 + ... + 1636.

2^1328770 is an apocalyptic number.

1328770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328770 is a deficient number, since it is larger than the sum of its proper divisors (1091510).

1328770 is a wasteful number, since it uses less digits than its factorization.

1328770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1328770 is about 1152.7228634845. The cubic root of 1328770 is about 109.9385331525.

The spelling of 1328770 in words is "one million, three hundred twenty-eight thousand, seven hundred seventy".