1272838 has 8 divisors (see below), whose sum is σ = 2182032. Its totient is φ = 545496.

The previous prime is 1272833. The next prime is 1272847. The reversal of 1272838 is 8382721.

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 (1272833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45445 + ... + 45472.

It is an arithmetic number, because the mean of its divisors is an integer number (272754).

2^1272838 is an apocalyptic number.

1272838 is a deficient number, since it is larger than the sum of its proper divisors (909194).

1272838 is an equidigital number, since it uses as much as digits as its factorization.

1272838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90926.

The product of its digits is 5376, while the sum is 31.

The square root of 1272838 is about 1128.2012231867. The cubic root of 1272838 is about 108.3738189247.

The spelling of 1272838 in words is "one million, two hundred seventy-two thousand, eight hundred thirty-eight".