11800920 has 64 divisors (see below), whose sum is σ = 36241920. Its totient is φ = 3072384.

The previous prime is 11800913. The next prime is 11800931. The reversal of 11800920 is 2900811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4017 + ... + 6303.

It is an arithmetic number, because the mean of its divisors is an integer number (566280).

Almost surely, 2^11800920 is an apocalyptic number.

11800920 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 11800920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18120960).

11800920 is an abundant number, since it is smaller than the sum of its proper divisors (24441000).

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

11800920 is a wasteful number, since it uses less digits than its factorization.

11800920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 11800920 is about 3435.2467160307. The cubic root of 11800920 is about 227.6697280291.

It can be divided in two parts, 11800 and 920, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 11800920 in words is "eleven million, eight hundred thousand, nine hundred twenty".