1171380 has 48 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 267648.

The previous prime is 1171343. The next prime is 1171393. The reversal of 1171380 is 831711.

It is a super-2 number, since 2×1171380² = 2744262208800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (78120).

2^1171380 is an apocalyptic number.

1171380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171380 is an abundant number, since it is smaller than the sum of its proper divisors (2578380).

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

1171380 is a wasteful number, since it uses less digits than its factorization.

1171380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1171380 is about 1082.3030998754. The cubic root of 1171380 is about 105.4142366572.

It can be divided in two parts, 1171 and 380, that added together give a palindrome (1551).

The spelling of 1171380 in words is "one million, one hundred seventy-one thousand, three hundred eighty".