1190280 has 128 divisors (see below), whose sum is σ = 4435200. Its totient is φ = 248832.

The previous prime is 1190279. The next prime is 1190291. The reversal of 1190280 is 820911.

It is a Cunningham number, because it is equal to 1091²-1.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10866 + ... + 10974.

It is an arithmetic number, because the mean of its divisors is an integer number (34650).

2^1190280 is an apocalyptic number.

1190280 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 1190280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2217600).

1190280 is an abundant number, since it is smaller than the sum of its proper divisors (3244920).

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

1190280 is a wasteful number, since it uses less digits than its factorization.

1190280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1190280 is about 1090.9995417048. Note that the first 3 decimals coincide. The cubic root of 1190280 is about 105.9781609215.

The spelling of 1190280 in words is "one million, one hundred ninety thousand, two hundred eighty".