1163880 has 96 divisors (see below), whose sum is σ = 3917160. Its totient is φ = 299520.

The previous prime is 1163879. The next prime is 1163891. The reversal of 1163880 is 883611.

It can be written as a sum of positive squares in 4 ways, for example, as 736164 + 427716 = 858^2 + 654^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19050 + ... + 19110.

2^1163880 is an apocalyptic number.

1163880 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 1163880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1958580).

1163880 is an abundant number, since it is smaller than the sum of its proper divisors (2753280).

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

1163880 is a wasteful number, since it uses less digits than its factorization.

1163880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1163880 is about 1078.8327025077. The cubic root of 1163880 is about 105.1887760486.

The spelling of 1163880 in words is "one million, one hundred sixty-three thousand, eight hundred eighty".