11743820 has 24 divisors (see below), whose sum is σ = 26904528. Its totient is φ = 4270400.

The previous prime is 11743813. The next prime is 11743829. The reversal of 11743820 is 2834711.

It is a self number, because there is not a number n which added to its sum of digits gives 11743820.

It is not an unprimeable number, because it can be changed into a prime (11743829) 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, 26471 + ... + 26910.

It is an arithmetic number, because the mean of its divisors is an integer number (1121022).

Almost surely, 2^11743820 is an apocalyptic number.

11743820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11743820 is an abundant number, since it is smaller than the sum of its proper divisors (15160708).

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

11743820 is a wasteful number, since it uses less digits than its factorization.

11743820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53401 (or 53399 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 11743820 is about 3426.9257359914. The cubic root of 11743820 is about 227.3019328286.

It can be divided in two parts, 1174 and 3820, that added together give a palindrome (4994).

The spelling of 11743820 in words is "eleven million, seven hundred forty-three thousand, eight hundred twenty".