1276827140 has 24 divisors (see below), whose sum is σ = 2707373760. Its totient is φ = 505771488.

The previous prime is 1276827121. The next prime is 1276827157. The reversal of 1276827140 is 417286721.

It is a junction number, because it is equal to n+sod(n) for n = 1276827094 and 1276827103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307850 + ... + 311969.

It is an arithmetic number, because the mean of its divisors is an integer number (112807240).

Almost surely, 2^1276827140 is an apocalyptic number.

1276827140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1276827140 is an abundant number, since it is smaller than the sum of its proper divisors (1430546620).

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

1276827140 is a wasteful number, since it uses less digits than its factorization.

1276827140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619931 (or 619929 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 1276827140 is about 35732.7180606234. The cubic root of 1276827140 is about 1084.8691723587.

The spelling of 1276827140 in words is "one billion, two hundred seventy-six million, eight hundred twenty-seven thousand, one hundred forty".