1199780 has 24 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 476000.

The previous prime is 1199777. The next prime is 1199789. The reversal of 1199780 is 879911.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1199780.

It is not an unprimeable number, because it can be changed into a prime (1199789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4655 + ... + 4905.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2^1199780 is an apocalyptic number.

1199780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1199780 is an abundant number, since it is smaller than the sum of its proper divisors (1340380).

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

1199780 is a wasteful number, since it uses less digits than its factorization.

1199780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1199780 is about 1095.3446946053. The cubic root of 1199780 is about 106.2593624968.

The spelling of 1199780 in words is "one million, one hundred ninety-nine thousand, seven hundred eighty".