1273888 has 72 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 485760.

The previous prime is 1273879. The next prime is 1273889. The reversal of 1273888 is 8883721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273889) 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 11 ways as a sum of consecutive naturals, for example, 27081 + ... + 27127.

It is an arithmetic number, because the mean of its divisors is an integer number (44688).

2^1273888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608768).

1273888 is an abundant number, since it is smaller than the sum of its proper divisors (1943648).

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

1273888 is a wasteful number, since it uses less digits than its factorization.

1273888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 67 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 1273888 is about 1128.6664697775. Note that the first 3 decimals coincide. The cubic root of 1273888 is about 108.4036109417.

The spelling of 1273888 in words is "one million, two hundred seventy-three thousand, eight hundred eighty-eight".