1177988 has 12 divisors (see below), whose sum is σ = 2356032. Its totient is φ = 504840.

The previous prime is 1177987. The next prime is 1177997. The reversal of 1177988 is 8897711.

1177988 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1177987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21008 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (196336).

2^1177988 is an apocalyptic number.

It is an amenable number.

1177988 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.

1177988 is a wasteful number, since it uses less digits than its factorization.

1177988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42082 (or 42080 counting only the distinct ones).

The product of its digits is 28224, while the sum is 41.

The square root of 1177988 is about 1085.3515559486. The cubic root of 1177988 is about 105.6120863500.

The spelling of 1177988 in words is "one million, one hundred seventy-seven thousand, nine hundred eighty-eight".