1180980 has 66 divisors (see below), whose sum is σ = 3720066. Its totient is φ = 314928.

The previous prime is 1180979. The next prime is 1180987. The reversal of 1180980 is 890811.

It can be written as a sum of positive squares in only one way, i.e., 944784 + 236196 = 972^2 + 486^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 135 × 81 × 108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 236194 + ... + 236198.

2^1180980 is an apocalyptic number.

1180980 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 1180980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860033).

1180980 is an abundant number, since it is smaller than the sum of its proper divisors (2539086).

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

1180980 is an frugal number, since it uses more digits than its factorization.

1180980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1180980 is about 1086.7290370649. The cubic root of 1180980 is about 105.7014263116.

The spelling of 1180980 in words is "one million, one hundred eighty thousand, nine hundred eighty".