20344344 has 16 divisors (see below), whose sum is σ = 50860920. Its totient is φ = 6781440.

The previous prime is 20344343. The next prime is 20344369. The reversal of 20344344 is 44344302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 847681 = 20344344 / (2 + 0 + 3 + 4 + 4 + 3 + 4 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423817 + ... + 423864.

Almost surely, 2^20344344 is an apocalyptic number.

20344344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20344344 is an abundant number, since it is smaller than the sum of its proper divisors (30516576).

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

20344344 is a wasteful number, since it uses less digits than its factorization.

20344344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847690 (or 847686 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 20344344 is about 4510.4704854372. The cubic root of 20344344 is about 272.9907281264.

Adding to 20344344 its reverse (44344302), we get a palindrome (64688646).

The spelling of 20344344 in words is "twenty million, three hundred forty-four thousand, three hundred forty-four".