20129344 has 28 divisors (see below), whose sum is σ = 40093900. Its totient is φ = 10027008.

The previous prime is 20129339. The next prime is 20129353. The reversal of 20129344 is 44392102.

It can be written as a sum of positive squares in 2 ways, for example, as 13778944 + 6350400 = 3712^2 + 2520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25792 + ... + 26560.

It is an arithmetic number, because the mean of its divisors is an integer number (1431925).

Almost surely, 2^20129344 is an apocalyptic number.

It is an amenable number.

20129344 is a deficient number, since it is larger than the sum of its proper divisors (19964556).

20129344 is an equidigital number, since it uses as much as digits as its factorization.

20129344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20129344 is about 4486.5737484187. The cubic root of 20129344 is about 272.0256607855.

The spelling of 20129344 in words is "twenty million, one hundred twenty-nine thousand, three hundred forty-four".