1198812 has 12 divisors (see below), whose sum is σ = 2797256. Its totient is φ = 399600.

The previous prime is 1198811. The next prime is 1198819. The reversal of 1198812 is 2188911.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1198812² = 2874300422688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1198812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198811) 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, 49939 + ... + 49962.

2^1198812 is an apocalyptic number.

1198812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1198812 is an abundant number, since it is smaller than the sum of its proper divisors (1598444).

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

1198812 is a wasteful number, since it uses less digits than its factorization.

1198812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99908 (or 99906 counting only the distinct ones).

The product of its digits is 1152, while the sum is 30.

The square root of 1198812 is about 1094.9027354062. The cubic root of 1198812 is about 106.2307776068.

Subtracting 1198812 from its reverse (2188911), we obtain a palindrome (990099).

The spelling of 1198812 in words is "one million, one hundred ninety-eight thousand, eight hundred twelve".