1161960 has 64 divisors (see below), whose sum is σ = 3646080. Its totient is φ = 295680.

The previous prime is 1161949. The next prime is 1161991. The reversal of 1161960 is 691611.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1161960.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2550 + ... + 2970.

It is an arithmetic number, because the mean of its divisors is an integer number (56970).

2^1161960 is an apocalyptic number.

1161960 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 1161960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823040).

1161960 is an abundant number, since it is smaller than the sum of its proper divisors (2484120).

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

1161960 is a wasteful number, since it uses less digits than its factorization.

1161960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1161960 is about 1077.9424845510. The cubic root of 1161960 is about 105.1309024969.

The spelling of 1161960 in words is "one million, one hundred sixty-one thousand, nine hundred sixty".