1127980 has 36 divisors (see below), whose sum is σ = 2757888. Its totient is φ = 386400.

The previous prime is 1127969. The next prime is 1127981. The reversal of 1127980 is 897211.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1127981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405 + ... + 1555.

It is an arithmetic number, because the mean of its divisors is an integer number (76608).

2^1127980 is an apocalyptic number.

1127980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1127980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1378944).

1127980 is an abundant number, since it is smaller than the sum of its proper divisors (1629908).

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

1127980 is a wasteful number, since it uses less digits than its factorization.

1127980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1127980 is about 1062.0640282017. The cubic root of 1127980 is about 104.0959420364.

The spelling of 1127980 in words is "one million, one hundred twenty-seven thousand, nine hundred eighty".