20344407 has 8 divisors (see below), whose sum is σ = 27366384. Its totient is φ = 13442688.

The previous prime is 20344403. The next prime is 20344417. The reversal of 20344407 is 70444302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20344407 - 2² = 20344403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344403) 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, 29668 + ... + 30345.

It is an arithmetic number, because the mean of its divisors is an integer number (3420798).

Almost surely, 2^20344407 is an apocalyptic number.

20344407 is a deficient number, since it is larger than the sum of its proper divisors (7021977).

20344407 is a wasteful number, since it uses less digits than its factorization.

20344407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60129.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20344407 is about 4510.4774691822. The cubic root of 20344407 is about 272.9910099147.

Adding to 20344407 its reverse (70444302), we get a palindrome (90788709).

It can be divided in two parts, 2034 and 4407, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 20344407 in words is "twenty million, three hundred forty-four thousand, four hundred seven".