1196820 has 72 divisors (see below), whose sum is σ = 3723720. Its totient is φ = 311040.

The previous prime is 1196813. The next prime is 1196837. The reversal of 1196820 is 286911.

1196820 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 4 ways, for example, as 17424 + 1179396 = 132^2 + 1086^2 .

It is a super-2 number, since 2×1196820² = 2864756224800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10926 + ... + 11034.

2^1196820 is an apocalyptic number.

1196820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1196820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861860).

1196820 is an abundant number, since it is smaller than the sum of its proper divisors (2526900).

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

1196820 is a wasteful number, since it uses less digits than its factorization.

1196820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1196820 is about 1093.9926873613. The cubic root of 1196820 is about 106.1719057055.

Subtracting from 1196820 its reverse (286911), we obtain a palindrome (909909).

It can be divided in two parts, 1196 and 820, that added together give a triangular number (2016 = T₆₃).

The spelling of 1196820 in words is "one million, one hundred ninety-six thousand, eight hundred twenty".