1198940 has 24 divisors (see below), whose sum is σ = 2540832. Its totient is φ = 475200.

The previous prime is 1198927. The next prime is 1198949. The reversal of 1198940 is 498911.

It is a junction number, because it is equal to n+sod(n) for n = 1198897 and 1198906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198949) 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, 2822 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (105868).

2^1198940 is an apocalyptic number.

1198940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198940 is an abundant number, since it is smaller than the sum of its proper divisors (1341892).

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

1198940 is a wasteful number, since it uses less digits than its factorization.

1198940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1198940 is about 1094.9611865267. The cubic root of 1198940 is about 106.2345583095.

The spelling of 1198940 in words is "one million, one hundred ninety-eight thousand, nine hundred forty".