1117980 has 36 divisors (see below), whose sum is σ = 3391752. Its totient is φ = 298080.

The previous prime is 1117973. The next prime is 1117993. The reversal of 1117980 is 897111.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2926 + ... + 3285.

2^1117980 is an apocalyptic number.

1117980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1117980 is an abundant number, since it is smaller than the sum of its proper divisors (2273772).

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

1117980 is a wasteful number, since it uses less digits than its factorization.

1117980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226 (or 6221 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 1117980 is about 1057.3457334288. The cubic root of 1117980 is about 103.7874109049.

The spelling of 1117980 in words is "one million, one hundred seventeen thousand, nine hundred eighty".