1127640556 has 12 divisors (see below), whose sum is σ = 2255281168. Its totient is φ = 483274512.

The previous prime is 1127640551. The next prime is 1127640559. The reversal of 1127640556 is 6550467211.

It is a happy number.

1127640556 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1127640551) 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 3 ways as a sum of consecutive naturals, for example, 20136411 + ... + 20136466.

Almost surely, 2^1127640556 is an apocalyptic number.

It is an amenable number.

1127640556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1127640556 is a wasteful number, since it uses less digits than its factorization.

1127640556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40272888 (or 40272886 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 1127640556 is about 33580.3596764537. The cubic root of 1127640556 is about 1040.8549909471.

The spelling of 1127640556 in words is "one billion, one hundred twenty-seven million, six hundred forty thousand, five hundred fifty-six".