1296578 has 4 divisors (see below), whose sum is σ = 1944870. Its totient is φ = 648288.

The previous prime is 1296571. The next prime is 1296583. The reversal of 1296578 is 8756921.

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

It can be written as a sum of positive squares in only one way, i.e., 877969 + 418609 = 937^2 + 647^2 .

It is a super-2 number, since 2×1296578² = 3362229020168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1296571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324143 + ... + 324146.

2^1296578 is an apocalyptic number.

1296578 is a deficient number, since it is larger than the sum of its proper divisors (648292).

1296578 is an equidigital number, since it uses as much as digits as its factorization.

1296578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648291.

The product of its digits is 30240, while the sum is 38.

The square root of 1296578 is about 1138.6737899855. The cubic root of 1296578 is about 109.0434414280.

The spelling of 1296578 in words is "one million, two hundred ninety-six thousand, five hundred seventy-eight".