1273080726 has 80 divisors (see below), whose sum is σ = 2928817584. Its totient is φ = 413185536.

The previous prime is 1273080707. The next prime is 1273080727. The reversal of 1273080726 is 6270803721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273080727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 980910 + ... + 982206.

Almost surely, 2^1273080726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273080726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464408792).

1273080726 is an abundant number, since it is smaller than the sum of its proper divisors (1655736858).

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

1273080726 is a wasteful number, since it uses less digits than its factorization.

1273080726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1273080726 is about 35680.2568096139. The cubic root of 1273080726 is about 1083.8070732985.

The spelling of 1273080726 in words is "one billion, two hundred seventy-three million, eighty thousand, seven hundred twenty-six".