1198978 has 8 divisors (see below), whose sum is σ = 1962000. Its totient is φ = 544980.

The previous prime is 1198973. The next prime is 1198979. The reversal of 1198978 is 8798911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1198973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27228 + ... + 27271.

It is an arithmetic number, because the mean of its divisors is an integer number (245250).

2^1198978 is an apocalyptic number.

1198978 is a deficient number, since it is larger than the sum of its proper divisors (763022).

1198978 is a wasteful number, since it uses less digits than its factorization.

1198978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54512.

The product of its digits is 36288, while the sum is 43.

The square root of 1198978 is about 1094.9785386025. The cubic root of 1198978 is about 106.2356806539.

It can be divided in two parts, 11 and 98978, that added together give a palindrome (98989).

The spelling of 1198978 in words is "one million, one hundred ninety-eight thousand, nine hundred seventy-eight".