20344430 has 16 divisors (see below), whose sum is σ = 36984384. Its totient is φ = 8056800.

The previous prime is 20344417. The next prime is 20344433. The reversal of 20344430 is 3444302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9062 + ... + 11081.

It is an arithmetic number, because the mean of its divisors is an integer number (2311524).

Almost surely, 2^20344430 is an apocalyptic number.

20344430 is a deficient number, since it is larger than the sum of its proper divisors (16639954).

20344430 is a wasteful number, since it uses less digits than its factorization.

20344430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20251.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20344430 is about 4510.4800188007. The cubic root of 20344430 is about 272.9911127897.

Adding to 20344430 its reverse (3444302), we get a palindrome (23788732).

The spelling of 20344430 in words is "twenty million, three hundred forty-four thousand, four hundred thirty".