1272646 has 8 divisors (see below), whose sum is σ = 1917864. Its totient is φ = 633360.

The previous prime is 1272641. The next prime is 1272647. The reversal of 1272646 is 6462721.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272641) 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, 900 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (239733).

2^1272646 is an apocalyptic number.

1272646 is a deficient number, since it is larger than the sum of its proper divisors (645218).

1272646 is a wasteful number, since it uses less digits than its factorization.

1272646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966.

The product of its digits is 4032, while the sum is 28.

The square root of 1272646 is about 1128.1161287740. The cubic root of 1272646 is about 108.3683694698.

The spelling of 1272646 in words is "one million, two hundred seventy-two thousand, six hundred forty-six".