1198578 has 16 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 388656.

The previous prime is 1198537. The next prime is 1198583. The reversal of 1198578 is 8758911.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2478 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (153900).

2^1198578 is an apocalyptic number.

1198578 is an abundant number, since it is smaller than the sum of its proper divisors (1263822).

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

1198578 is a wasteful number, since it uses less digits than its factorization.

1198578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441.

The product of its digits is 20160, while the sum is 39.

The square root of 1198578 is about 1094.7958713843. The cubic root of 1198578 is about 106.2238653137.

It can be divided in two parts, 11 and 98578, that added together give a palindrome (98589).

The spelling of 1198578 in words is "one million, one hundred ninety-eight thousand, five hundred seventy-eight".