11820429 has 12 divisors (see below), whose sum is σ = 17663100. Its totient is φ = 7608384.

The previous prime is 11820407. The next prime is 11820433. The reversal of 11820429 is 92402811.

11820429 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8122500 + 3697929 = 2850^2 + 1923^2 .

It is not a de Polignac number, because 11820429 - 2⁷ = 11820301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11820439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22384 + ... + 22905.

It is an arithmetic number, because the mean of its divisors is an integer number (1471925).

Almost surely, 2^11820429 is an apocalyptic number.

It is an amenable number.

11820429 is a deficient number, since it is larger than the sum of its proper divisors (5842671).

11820429 is a wasteful number, since it uses less digits than its factorization.

11820429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45324 (or 45321 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 11820429 is about 3438.0850774814. The cubic root of 11820429 is about 227.7951183485.

The spelling of 11820429 in words is "eleven million, eight hundred twenty thousand, four hundred twenty-nine".