1325978 has 8 divisors (see below), whose sum is σ = 1995060. Its totient is φ = 660960.

The previous prime is 1325977. The next prime is 1325993. The reversal of 1325978 is 8795231.

It can be written as a sum of positive squares in 2 ways, for example, as 1138489 + 187489 = 1067^2 + 433^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1325977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 1628.

2^1325978 is an apocalyptic number.

1325978 is a deficient number, since it is larger than the sum of its proper divisors (669082).

1325978 is a wasteful number, since it uses less digits than its factorization.

1325978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its digits is 15120, while the sum is 35.

The square root of 1325978 is about 1151.5111810139. The cubic root of 1325978 is about 109.8614785276.

The spelling of 1325978 in words is "one million, three hundred twenty-five thousand, nine hundred seventy-eight".