1160820 has 36 divisors (see below), whose sum is σ = 3521700. Its totient is φ = 309504.

The previous prime is 1160813. The next prime is 1160837. The reversal of 1160820 is 280611.

It can be written as a sum of positive squares in 2 ways, for example, as 842724 + 318096 = 918^2 + 564^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1160793 and 1160802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3045 + ... + 3404.

It is an arithmetic number, because the mean of its divisors is an integer number (97825).

2^1160820 is an apocalyptic number.

1160820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1160820 is an abundant number, since it is smaller than the sum of its proper divisors (2360880).

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

1160820 is a wasteful number, since it uses less digits than its factorization.

1160820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1160820 is about 1077.4135696194. The cubic root of 1160820 is about 105.0965099060.

It can be divided in two parts, 11608 and 20, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1160820 in words is "one million, one hundred sixty thousand, eight hundred twenty".