1273872 has 20 divisors (see below), whose sum is σ = 3290960. Its totient is φ = 424608.

The previous prime is 1273843. The next prime is 1273879. The reversal of 1273872 is 2783721.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1273879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13222 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (164548).

2^1273872 is an apocalyptic number.

1273872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1273872 is an abundant number, since it is smaller than the sum of its proper divisors (2017088).

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

1273872 is a wasteful number, since it uses less digits than its factorization.

1273872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26550 (or 26544 counting only the distinct ones).

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

The square root of 1273872 is about 1128.6593817446. The cubic root of 1273872 is about 108.4031570909.

It can be divided in two parts, 1273 and 872, that added together give a triangular number (2145 = T₆₅).

The spelling of 1273872 in words is "one million, two hundred seventy-three thousand, eight hundred seventy-two".