1272738 has 8 divisors (see below), whose sum is σ = 2545488. Its totient is φ = 424244.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272738 is 8372721.

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

1272738 is an admirable number.

It is an unprimeable number.

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, 106056 + ... + 106067.

It is an arithmetic number, because the mean of its divisors is an integer number (318186).

2^1272738 is an apocalyptic number.

1272738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272738 is a wasteful number, since it uses less digits than its factorization.

1272738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212128.

The product of its digits is 4704, while the sum is 30.

The square root of 1272738 is about 1128.1569039810. The cubic root of 1272738 is about 108.3709807353.

The spelling of 1272738 in words is "one million, two hundred seventy-two thousand, seven hundred thirty-eight".