1275427896 has 64 divisors (see below), whose sum is σ = 3369100800. Its totient is φ = 401241600.

The previous prime is 1275427891. The next prime is 1275427927. The reversal of 1275427896 is 6987245721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275427891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118416 + ... + 128736.

It is an arithmetic number, because the mean of its divisors is an integer number (52642200).

Almost surely, 2^1275427896 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 1275427896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684550400).

1275427896 is an abundant number, since it is smaller than the sum of its proper divisors (2093672904).

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

1275427896 is a wasteful number, since it uses less digits than its factorization.

1275427896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10620 (or 10616 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 1275427896 is about 35713.1333825527. The cubic root of 1275427896 is about 1084.4727335398.

The spelling of 1275427896 in words is "one billion, two hundred seventy-five million, four hundred twenty-seven thousand, eight hundred ninety-six".