11803820 has 24 divisors (see below), whose sum is σ = 28329504. Its totient is φ = 4046976.

The previous prime is 11803819. The next prime is 11803829. The reversal of 11803820 is 2830811.

It is not an unprimeable number, because it can be changed into a prime (11803829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42017 + ... + 42296.

It is an arithmetic number, because the mean of its divisors is an integer number (1180396).

Almost surely, 2^11803820 is an apocalyptic number.

11803820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11803820 is an abundant number, since it is smaller than the sum of its proper divisors (16525684).

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

11803820 is a wasteful number, since it uses less digits than its factorization.

11803820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84329 (or 84327 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 11803820 is about 3435.6687849675. The cubic root of 11803820 is about 227.6883759576.

The spelling of 11803820 in words is "eleven million, eight hundred three thousand, eight hundred twenty".